8.6
HIGH
CVSS 3.1
CVE-2025-20239
"Cisco IKEv2 Memory Leak Vulnerability"
Overview
Description
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA) Software, and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition. This vulnerability is due to a lack of proper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. In the case of Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly. In the case of Cisco ASA and FTD Software, a successful exploit could allow the attacker to partially exhaust system memory, causing system instability such as being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.
Details
INFO
Published Date :
Aug. 14, 2025, 5:15 p.m.
Last Modified :
June 17, 2026, 8:41 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Impact
Affected Products
The following products are affected by CVE-2025-20239
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
Update Cisco software to patch IKEv2 memory leak vulnerability and prevent denial of service.
- Update affected Cisco software to the latest version.
- Apply security patches provided by Cisco.
- Consider disabling IKEv2 if not in use.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-20239.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-DOESHWHy |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-20239 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-20239
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-20239 vulnerability anywhere in the article.
-
The Hacker News
Cisco Warns of CVSS 10.0 FMC RADIUS Flaw Allowing Remote Code Execution
Aug 15, 2025Ravie LakshmananVulnerability / Network Security Cisco has released security updates to address a maximum-severity security flaw in Secure Firewall Management Center (FMC) Software that ... Read more
Published Date:
Aug 15, 2025 (11 months ago)
The following table lists the changes that have been made to the
CVE-2025-20239 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Cisco', 'product': 'IOS', 'versions': [{'status': 'affected', 'version': '15.2(4)E'}, {'status': 'affected', 'version': '15.2(4)E1'}, {'status': 'affected', 'version': '15.2(4)E2'}, {'status': 'affected', 'version': '15.2(5)E'}, {'status': 'affected', 'version': '15.2(4)E3'}, {'status': 'affected', 'version': '15.2(5)E1'}, {'status': 'affected', 'version': '15.2(5b)E'}, {'status': 'affected', 'version': '15.2(5a)E1'}, {'status': 'affected', 'version': '15.2(4)E4'}, {'status': 'affected', 'version': '15.2(5)E2'}, {'status': 'affected', 'version': '15.2(6)E'}, {'status': 'affected', 'version': '15.2(4)E5'}, {'status': 'affected', 'version': '15.2(5)E2c'}, {'status': 'affected', 'version': '15.2(6)E0a'}, {'status': 'affected', 'version': '15.2(6)E1'}, {'status': 'affected', 'version': '15.2(6)E0c'}, {'status': 'affected', 'version': '15.2(4)E6'}, {'status': 'affected', 'version': '15.2(6)E2'}, {'status': 'affected', 'version': '15.2(4)E7'}, {'status': 'affected', 'version': '15.2(7)E'}, {'status': 'affected', 'version': '15.2(4)E8'}, {'status': 'affected', 'version': '15.2(6)E2a'}, {'status': 'affected', 'version': '15.2(7)E1'}, {'status': 'affected', 'version': '15.2(7)E0a'}, {'status': 'affected', 'version': '15.2(7)E0b'}, {'status': 'affected', 'version': '15.2(7)E0s'}, {'status': 'affected', 'version': '15.2(6)E3'}, {'status': 'affected', 'version': '15.2(4)E9'}, {'status': 'affected', 'version': '15.2(7)E2'}, {'status': 'affected', 'version': '15.2(7a)E0b'}, {'status': 'affected', 'version': '15.2(4)E10'}, {'status': 'affected', 'version': '15.2(7)E3'}, {'status': 'affected', 'version': '15.2(7)E1a'}, {'status': 'affected', 'version': '15.2(7b)E0b'}, {'status': 'affected', 'version': '15.2(4)E10a'}, {'status': 'affected', 'version': '15.2(7)E4'}, {'status': 'affected', 'version': '15.2(8)E'}, {'status': 'affected', 'version': '15.2(8)E1'}, {'status': 'affected', 'version': '15.2(7)E5'}, {'status': 'affected', 'version': '15.2(7)E6'}, {'status': 'affected', 'version': '15.2(8)E2'}, {'status': 'affected', 'version': '15.2(4)E10d'}, {'status': 'affected', 'version': '15.2(7)E7'}, {'status': 'affected', 'version': '15.2(8)E3'}, {'status': 'affected', 'version': '15.2(7)E8'}, {'status': 'affected', 'version': '15.2(8)E4'}, {'status': 'affected', 'version': '15.2(7)E9'}, {'status': 'affected', 'version': '15.2(8)E5'}, {'status': 'affected', 'version': '15.2(8)E6'}, {'status': 'affected', 'version': '15.2(7)E10'}, {'status': 'affected', 'version': '15.2(7)E11'}, {'status': 'affected', 'version': '15.2(8)E7'}, {'status': 'affected', 'version': '15.2(7)E12'}, {'status': 'affected', 'version': '15.5(1)S'}, {'status': 'affected', 'version': '15.5(2)S'}, {'status': 'affected', 'version': '15.5(1)S1'}, {'status': 'affected', 'version': '15.5(3)S'}, {'status': 'affected', 'version': '15.5(1)S2'}, {'status': 'affected', 'version': '15.5(1)S3'}, {'status': 'affected', 'version': '15.5(2)S1'}, {'status': 'affected', 'version': '15.5(2)S2'}, {'status': 'affected', 'version': '15.5(3)S1'}, {'status': 'affected', 'version': '15.5(3)S1a'}, {'status': 'affected', 'version': '15.5(2)S3'}, {'status': 'affected', 'version': '15.5(3)S2'}, {'status': 'affected', 'version': '15.5(3)S0a'}, {'status': 'affected', 'version': '15.5(3)S3'}, {'status': 'affected', 'version': '15.5(1)S4'}, {'status': 'affected', 'version': '15.5(2)S4'}, {'status': 'affected', 'version': '15.5(3)S4'}, {'status': 'affected', 'version': '15.5(3)S5'}, {'status': 'affected', 'version': '15.5(3)S6'}, {'status': 'affected', 'version': '15.5(3)S6a'}, {'status': 'affected', 'version': '15.5(3)S7'}, {'status': 'affected', 'version': '15.5(3)S6b'}, {'status': 'affected', 'version': '15.5(3)S8'}, {'status': 'affected', 'version': '15.5(3)S9'}, {'status': 'affected', 'version': '15.5(3)S10'}, {'status': 'affected', 'version': '15.5(3)S9a'}, {'status': 'affected', 'version': '15.2(6)EB'}, {'status': 'affected', 'version': '15.5(1)T'}, {'status': 'affected', 'version': '15.5(1)T1'}, {'status': 'affected', 'version': '15.5(2)T'}, {'status': 'affected', 'version': '15.5(1)T2'}, {'status': 'affected', 'version': '15.5(1)T3'}, {'status': 'affected', 'version': '15.5(2)T1'}, {'status': 'affected', 'version': '15.5(2)T2'}, {'status': 'affected', 'version': '15.5(2)T3'}, {'status': 'affected', 'version': '15.5(2)T4'}, {'status': 'affected', 'version': '15.5(1)T4'}, {'status': 'affected', 'version': '15.2(4)EA'}, {'status': 'affected', 'version': '15.2(4)EA1'}, {'status': 'affected', 'version': '15.2(5)EA'}, {'status': 'affected', 'version': '15.2(4)EA4'}, {'status': 'affected', 'version': '15.2(4)EA5'}, {'status': 'affected', 'version': '15.2(4)EA6'}, {'status': 'affected', 'version': '15.2(4)EA7'}, {'status': 'affected', 'version': '15.2(4)EA8'}, {'status': 'affected', 'version': '15.2(4)EA9'}, {'status': 'affected', 'version': '15.2(4)EA9a'}, {'status': 'affected', 'version': '15.5(3)M'}, {'status': 'affected', 'version': '15.5(3)M1'}, {'status': 'affected', 'version': '15.5(3)M0a'}, {'status': 'affected', 'version': '15.5(3)M2'}, {'status': 'affected', 'version': '15.5(3)M3'}, {'status': 'affected', 'version': '15.5(3)M4'}, {'status': 'affected', 'version': '15.5(3)M4a'}, {'status': 'affected', 'version': '15.5(3)M5'}, {'status': 'affected', 'version': '15.5(3)M6'}, {'status': 'affected', 'version': '15.5(3)M7'}, {'status': 'affected', 'version': '15.5(3)M6a'}, {'status': 'affected', 'version': '15.5(3)M8'}, {'status': 'affected', 'version': '15.5(3)M9'}, {'status': 'affected', 'version': '15.5(3)M10'}, {'status': 'affected', 'version': '15.5(3)SN'}, {'status': 'affected', 'version': '15.6(1)S'}, {'status': 'affected', 'version': '15.6(2)S'}, {'status': 'affected', 'version': '15.6(2)S1'}, {'status': 'affected', 'version': '15.6(1)S1'}, {'status': 'affected', 'version': '15.6(1)S2'}, {'status': 'affected', 'version': '15.6(2)S2'}, {'status': 'affected', 'version': '15.6(1)S3'}, {'status': 'affected', 'version': '15.6(2)S3'}, {'status': 'affected', 'version': '15.6(1)S4'}, {'status': 'affected', 'version': '15.6(2)S4'}, {'status': 'affected', 'version': '15.6(1)T'}, {'status': 'affected', 'version': '15.6(2)T'}, {'status': 'affected', 'version': '15.6(1)T0a'}, {'status': 'affected', 'version': '15.6(1)T1'}, {'status': 'affected', 'version': '15.6(2)T1'}, {'status': 'affected', 'version': '15.6(1)T2'}, {'status': 'affected', 'version': '15.6(2)T2'}, {'status': 'affected', 'version': '15.6(1)T3'}, {'status': 'affected', 'version': '15.6(2)T3'}, {'status': 'affected', 'version': '15.3(1)SY'}, {'status': 'affected', 'version': '15.3(1)SY1'}, {'status': 'affected', 'version': '15.3(1)SY2'}, {'status': 'affected', 'version': '15.6(2)SP'}, {'status': 'affected', 'version': '15.6(2)SP1'}, {'status': 'affected', 'version': '15.6(2)SP2'}, {'status': 'affected', 'version': '15.6(2)SP3'}, {'status': 'affected', 'version': '15.6(2)SP4'}, {'status': 'affected', 'version': '15.6(2)SP5'}, {'status': 'affected', 'version': '15.6(2)SP6'}, {'status': 'affected', 'version': '15.6(2)SP7'}, {'status': 'affected', 'version': '15.6(2)SP8'}, {'status': 'affected', 'version': '15.6(2)SP9'}, {'status': 'affected', 'version': '15.6(2)SN'}, {'status': 'affected', 'version': '15.6(3)M'}, {'status': 'affected', 'version': '15.6(3)M1'}, {'status': 'affected', 'version': '15.6(3)M0a'}, {'status': 'affected', 'version': '15.6(3)M1b'}, {'status': 'affected', 'version': '15.6(3)M2'}, {'status': 'affected', 'version': '15.6(3)M2a'}, {'status': 'affected', 'version': '15.6(3)M3'}, {'status': 'affected', 'version': '15.6(3)M3a'}, {'status': 'affected', 'version': '15.6(3)M4'}, {'status': 'affected', 'version': '15.6(3)M5'}, {'status': 'affected', 'version': '15.6(3)M6'}, {'status': 'affected', 'version': '15.6(3)M7'}, {'status': 'affected', 'version': '15.6(3)M6a'}, {'status': 'affected', 'version': '15.6(3)M6b'}, {'status': 'affected', 'version': '15.6(3)M8'}, {'status': 'affected', 'version': '15.6(3)M9'}, {'status': 'affected', 'version': '15.2(4)EC1'}, {'status': 'affected', 'version': '15.2(4)EC2'}, {'status': 'affected', 'version': '15.3(3)JPC5'}, {'status': 'affected', 'version': '15.4(1)SY'}, {'status': 'affected', 'version': '15.4(1)SY1'}, {'status': 'affected', 'version': '15.4(1)SY2'}, {'status': 'affected', 'version': '15.4(1)SY3'}, {'status': 'affected', 'version': '15.4(1)SY4'}, {'status': 'affected', 'version': '15.5(1)SY'}, {'status': 'affected', 'version': '15.5(1)SY1'}, {'status': 'affected', 'version': '15.5(1)SY2'}, {'status': 'affected', 'version': '15.5(1)SY3'}, {'status': 'affected', 'version': '15.5(1)SY4'}, {'status': 'affected', 'version': '15.5(1)SY5'}, {'status': 'affected', 'version': '15.5(1)SY6'}, {'status': 'affected', 'version': '15.5(1)SY7'}, {'status': 'affected', 'version': '15.5(1)SY8'}, {'status': 'affected', 'version': '15.5(1)SY9'}, {'status': 'affected', 'version': '15.5(1)SY10'}, {'status': 'affected', 'version': '15.5(1)SY11'}, {'status': 'affected', 'version': '15.5(1)SY12'}, {'status': 'affected', 'version': '15.5(1)SY13'}, {'status': 'affected', 'version': '15.5(1)SY14'}, {'status': 'affected', 'version': '15.5(1)SY15'}, {'status': 'affected', 'version': '15.7(3)M'}, {'status': 'affected', 'version': '15.7(3)M1'}, {'status': 'affected', 'version': '15.7(3)M0a'}, {'status': 'affected', 'version': '15.7(3)M3'}, {'status': 'affected', 'version': '15.7(3)M2'}, {'status': 'affected', 'version': '15.7(3)M4'}, {'status': 'affected', 'version': '15.7(3)M5'}, {'status': 'affected', 'version': '15.7(3)M4a'}, {'status': 'affected', 'version': '15.7(3)M4b'}, {'status': 'affected', 'version': '15.7(3)M6'}, {'status': 'affected', 'version': '15.7(3)M7'}, {'status': 'affected', 'version': '15.7(3)M8'}, {'status': 'affected', 'version': '15.7(3)M9'}, {'status': 'affected', 'version': '15.8(3)M'}, {'status': 'affected', 'version': '15.8(3)M1'}, {'status': 'affected', 'version': '15.8(3)M0a'}, {'status': 'affected', 'version': '15.8(3)M0b'}, {'status': 'affected', 'version': '15.8(3)M2'}, {'status': 'affected', 'version': '15.8(3)M1a'}, {'status': 'affected', 'version': '15.8(3)M3'}, {'status': 'affected', 'version': '15.8(3)M2a'}, {'status': 'affected', 'version': '15.8(3)M4'}, {'status': 'affected', 'version': '15.8(3)M3a'}, {'status': 'affected', 'version': '15.8(3)M3b'}, {'status': 'affected', 'version': '15.8(3)M5'}, {'status': 'affected', 'version': '15.8(3)M6'}, {'status': 'affected', 'version': '15.8(3)M7'}, {'status': 'affected', 'version': '15.8(3)M8'}, {'status': 'affected', 'version': '15.8(3)M9'}, {'status': 'affected', 'version': '15.9(3)M'}, {'status': 'affected', 'version': '15.9(3)M1'}, {'status': 'affected', 'version': '15.9(3)M0a'}, {'status': 'affected', 'version': '15.9(3)M2'}, {'status': 'affected', 'version': '15.9(3)M3'}, {'status': 'affected', 'version': '15.9(3)M2a'}, {'status': 'affected', 'version': '15.9(3)M3a'}, {'status': 'affected', 'version': '15.9(3)M4'}, {'status': 'affected', 'version': '15.9(3)M3b'}, {'status': 'affected', 'version': '15.9(3)M5'}, {'status': 'affected', 'version': '15.9(3)M4a'}, {'status': 'affected', 'version': '15.9(3)M6'}, {'status': 'affected', 'version': '15.9(3)M7'}, {'status': 'affected', 'version': '15.9(3)M6a'}, {'status': 'affected', 'version': '15.9(3)M6b'}, {'status': 'affected', 'version': '15.9(3)M8'}, {'status': 'affected', 'version': '15.9(3)M7a'}, {'status': 'affected', 'version': '15.9(3)M9'}, {'status': 'affected', 'version': '15.9(3)M8b'}, {'status': 'affected', 'version': '15.9(3)M10'}, {'status': 'affected', 'version': '15.9(3)M11'}]}, {'vendor': 'Cisco', 'product': 'Cisco Adaptive Security Appliance (ASA) Software', 'versions': [{'status': 'affected', 'version': '9.8.1'}, {'status': 'affected', 'version': '9.8.1.5'}, {'status': 'affected', 'version': '9.8.1.7'}, {'status': 'affected', 'version': '9.8.2'}, {'status': 'affected', 'version': '9.8.2.8'}, {'status': 'affected', 'version': '9.8.2.14'}, {'status': 'affected', 'version': '9.8.2.15'}, {'status': 'affected', 'version': '9.8.2.17'}, {'status': 'affected', 'version': '9.8.2.20'}, {'status': 'affected', 'version': '9.8.2.24'}, {'status': 'affected', 'version': '9.8.2.26'}, {'status': 'affected', 'version': '9.8.2.28'}, {'status': 'affected', 'version': '9.8.2.33'}, {'status': 'affected', 'version': '9.8.2.35'}, {'status': 'affected', 'version': '9.8.2.38'}, {'status': 'affected', 'version': '9.8.3.8'}, {'status': 'affected', 'version': '9.8.3.11'}, {'status': 'affected', 'version': '9.8.3.14'}, {'status': 'affected', 'version': '9.8.3.16'}, {'status': 'affected', 'version': '9.8.3.18'}, {'status': 'affected', 'version': '9.8.3.21'}, {'status': 'affected', 'version': '9.8.3'}, {'status': 'affected', 'version': '9.8.3.26'}, {'status': 'affected', 'version': '9.8.3.29'}, {'status': 'affected', 'version': '9.8.4'}, {'status': 'affected', 'version': '9.8.4.3'}, {'status': 'affected', 'version': '9.8.4.7'}, {'status': 'affected', 'version': '9.8.4.8'}, {'status': 'affected', 'version': '9.8.4.10'}, {'status': 'affected', 'version': '9.8.4.12'}, {'status': 'affected', 'version': '9.8.4.15'}, {'status': 'affected', 'version': '9.8.4.17'}, {'status': 'affected', 'version': '9.8.2.45'}, {'status': 'affected', 'version': '9.8.4.25'}, {'status': 'affected', 'version': '9.8.4.20'}, {'status': 'affected', 'version': '9.8.4.22'}, {'status': 'affected', 'version': '9.8.4.26'}, {'status': 'affected', 'version': '9.8.4.29'}, {'status': 'affected', 'version': '9.8.4.32'}, {'status': 'affected', 'version': '9.8.4.33'}, {'status': 'affected', 'version': '9.8.4.34'}, {'status': 'affected', 'version': '9.8.4.35'}, {'status': 'affected', 'version': '9.8.4.39'}, {'status': 'affected', 'version': '9.8.4.40'}, {'status': 'affected', 'version': '9.8.4.41'}, {'status': 'affected', 'version': '9.8.4.43'}, {'status': 'affected', 'version': '9.8.4.44'}, {'status': 'affected', 'version': '9.8.4.45'}, {'status': 'affected', 'version': '9.8.4.46'}, {'status': 'affected', 'version': '9.8.4.48'}, {'status': 'affected', 'version': '9.12.1'}, {'status': 'affected', 'version': '9.12.1.2'}, {'status': 'affected', 'version': '9.12.1.3'}, {'status': 'affected', 'version': '9.12.2'}, {'status': 'affected', 'version': '9.12.2.4'}, {'status': 'affected', 'version': '9.12.2.5'}, {'status': 'affected', 'version': '9.12.2.9'}, {'status': 'affected', 'version': '9.12.3'}, {'status': 'affected', 'version': '9.12.3.2'}, {'status': 'affected', 'version': '9.12.3.7'}, {'status': 'affected', 'version': '9.12.4'}, {'status': 'affected', 'version': '9.12.3.12'}, {'status': 'affected', 'version': '9.12.3.9'}, {'status': 'affected', 'version': '9.12.2.1'}, {'status': 'affected', 'version': '9.12.4.2'}, {'status': 'affected', 'version': '9.12.4.4'}, {'status': 'affected', 'version': '9.12.4.7'}, {'status': 'affected', 'version': '9.12.4.10'}, {'status': 'affected', 'version': '9.12.4.13'}, {'status': 'affected', 'version': '9.12.4.8'}, {'status': 'affected', 'version': '9.12.4.18'}, {'status': 'affected', 'version': '9.12.4.24'}, {'status': 'affected', 'version': '9.12.4.26'}, {'status': 'affected', 'version': '9.12.4.29'}, {'status': 'affected', 'version': '9.12.4.30'}, {'status': 'affected', 'version': '9.12.4.35'}, {'status': 'affected', 'version': '9.12.4.37'}, {'status': 'affected', 'version': '9.12.4.38'}, {'status': 'affected', 'version': '9.12.4.39'}, {'status': 'affected', 'version': '9.12.4.40'}, {'status': 'affected', 'version': '9.12.4.41'}, {'status': 'affected', 'version': '9.12.4.47'}, {'status': 'affected', 'version': '9.12.4.48'}, {'status': 'affected', 'version': '9.12.4.50'}, {'status': 'affected', 'version': '9.12.4.52'}, {'status': 'affected', 'version': '9.12.4.54'}, {'status': 'affected', 'version': '9.12.4.55'}, {'status': 'affected', 'version': '9.12.4.56'}, {'status': 'affected', 'version': '9.12.4.58'}, {'status': 'affected', 'version': '9.12.4.62'}, 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'affected', 'version': '6.2.3.4'}, {'status': 'affected', 'version': '6.2.3.5'}, {'status': 'affected', 'version': '6.2.3.6'}, {'status': 'affected', 'version': '6.2.3.7'}, {'status': 'affected', 'version': '6.2.3.8'}, {'status': 'affected', 'version': '6.2.3.10'}, {'status': 'affected', 'version': '6.2.3.11'}, {'status': 'affected', 'version': '6.2.3.9'}, {'status': 'affected', 'version': '6.2.3.12'}, {'status': 'affected', 'version': '6.2.3.13'}, {'status': 'affected', 'version': '6.2.3.14'}, {'status': 'affected', 'version': '6.2.3.15'}, {'status': 'affected', 'version': '6.2.3.16'}, {'status': 'affected', 'version': '6.2.3.17'}, {'status': 'affected', 'version': '6.2.3.18'}, {'status': 'affected', 'version': '6.6.0'}, {'status': 'affected', 'version': '6.6.0.1'}, {'status': 'affected', 'version': '6.6.1'}, {'status': 'affected', 'version': '6.6.3'}, {'status': 'affected', 'version': '6.6.4'}, {'status': 'affected', 'version': '6.6.5'}, {'status': 'affected', 'version': '6.6.5.1'}, {'status': 'affected', 'version': '6.6.5.2'}, {'status': 'affected', 'version': '6.6.7'}, {'status': 'affected', 'version': '6.6.7.1'}, {'status': 'affected', 'version': '6.6.7.2'}, {'status': 'affected', 'version': '6.4.0'}, {'status': 'affected', 'version': '6.4.0.1'}, {'status': 'affected', 'version': '6.4.0.3'}, {'status': 'affected', 'version': '6.4.0.2'}, {'status': 'affected', 'version': '6.4.0.4'}, {'status': 'affected', 'version': '6.4.0.5'}, {'status': 'affected', 'version': '6.4.0.6'}, {'status': 'affected', 'version': '6.4.0.7'}, {'status': 'affected', 'version': '6.4.0.8'}, {'status': 'affected', 'version': '6.4.0.9'}, {'status': 'affected', 'version': '6.4.0.10'}, {'status': 'affected', 'version': '6.4.0.11'}, {'status': 'affected', 'version': '6.4.0.12'}, {'status': 'affected', 'version': '6.4.0.13'}, {'status': 'affected', 'version': '6.4.0.14'}, {'status': 'affected', 'version': '6.4.0.15'}, {'status': 'affected', 'version': '6.4.0.16'}, {'status': 'affected', 'version': '6.4.0.17'}, {'status': 'affected', 'version': '6.4.0.18'}, {'status': 'affected', 'version': '7.0.0'}, {'status': 'affected', 'version': '7.0.0.1'}, {'status': 'affected', 'version': '7.0.1'}, {'status': 'affected', 'version': '7.0.1.1'}, {'status': 'affected', 'version': '7.0.2'}, {'status': 'affected', 'version': '7.0.2.1'}, {'status': 'affected', 'version': '7.0.3'}, {'status': 'affected', 'version': '7.0.4'}, {'status': 'affected', 'version': '7.0.5'}, {'status': 'affected', 'version': '7.0.6'}, {'status': 'affected', 'version': '7.0.6.1'}, {'status': 'affected', 'version': '7.0.6.2'}, {'status': 'affected', 'version': '7.0.6.3'}, {'status': 'affected', 'version': '7.0.7'}, {'status': 'affected', 'version': '7.1.0'}, {'status': 'affected', 'version': '7.1.0.1'}, {'status': 'affected', 'version': '7.1.0.2'}, {'status': 'affected', 'version': '7.1.0.3'}, {'status': 'affected', 'version': '7.2.0'}, {'status': 'affected', 'version': '7.2.0.1'}, {'status': 'affected', 'version': '7.2.1'}, {'status': 'affected', 'version': '7.2.2'}, {'status': 'affected', 'version': '7.2.3'}, {'status': 'affected', 'version': '7.2.4'}, {'status': 'affected', 'version': '7.2.4.1'}, {'status': 'affected', 'version': '7.2.5'}, {'status': 'affected', 'version': '7.2.5.1'}, {'status': 'affected', 'version': '7.2.6'}, {'status': 'affected', 'version': '7.2.7'}, {'status': 'affected', 'version': '7.2.5.2'}, {'status': 'affected', 'version': '7.2.8'}, {'status': 'affected', 'version': '7.2.8.1'}, {'status': 'affected', 'version': '7.2.9'}, {'status': 'affected', 'version': '7.3.0'}, {'status': 'affected', 'version': '7.3.1'}, {'status': 'affected', 'version': '7.3.1.1'}, {'status': 'affected', 'version': '7.3.1.2'}, {'status': 'affected', 'version': '7.4.0'}, {'status': 'affected', 'version': '7.4.1'}, {'status': 'affected', 'version': '7.4.1.1'}, {'status': 'affected', 'version': '7.4.2'}, {'status': 'affected', 'version': '7.4.2.1'}, {'status': 'affected', 'version': '7.4.2.2'}, {'status': 'affected', 'version': '7.6.0'}, {'status': 'affected', 'version': '7.7.0'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-20239', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2025-08-14T18:39:25.980608Z'} -
New CVE Received by [email protected]
Aug. 14, 2025
Action Type Old Value New Value Added Description A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA) Software, and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition. This vulnerability is due to a lack of proper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. In the case of Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly. In the case of Cisco ASA and FTD Software, a successful exploit could allow the attacker to partially exhaust system memory, causing system instability such as being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CWE CWE-401 Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-DOESHWHy
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.