8.6
HIGH CVSS 3.1
CVE-2026-20012
"Cisco IKEv2 Memory Leak Vulnerability"
Description

A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, and Cisco 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 on an affected device. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit of Cisco IOS Software and IOS XE Software could allow the attacker to cause the affected device to reload, resulting in a DoS condition. A successful exploit of Cisco Secure Firewall ASA Software and Secure FTD Software could allow the attacker to partially exhaust system memory, resulting in system instability, such as the inability to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.

INFO

Published Date :

March 25, 2026, 4:16 p.m.

Last Modified :

June 17, 2026, 10:16 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2026-20012 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.

ID Vendor Product Action
1 Cisco ios_xe
2 Cisco ios
3 Cisco adaptive_security_appliance_software
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 affected Cisco software to patch IKEv2 packet parsing vulnerability, preventing denial of service.
  • Update Cisco IOS Software.
  • Update Cisco IOS XE Software.
  • Update Cisco Secure Firewall ASA Software.
  • Update Cisco Secure Firewall FTD Software.
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-2026-20012.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-kPEpQGGK
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20012 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-2026-20012 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-2026-20012 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-20012 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(1)S'}, {'status': 'affected', 'version': '15.2(2)S'}, {'status': 'affected', 'version': '15.2(1)S1'}, {'status': 'affected', 'version': '15.2(4)S'}, {'status': 'affected', 'version': '15.2(1)S2'}, {'status': 'affected', 'version': '15.2(2)S1'}, {'status': 'affected', 'version': '15.2(2)S2'}, {'status': 'affected', 'version': '15.2(2)S0a'}, {'status': 'affected', 'version': '15.2(2)S0c'}, {'status': 'affected', 'version': '15.2(4)S1'}, {'status': 'affected', 'version': '15.2(4)S4'}, {'status': 'affected', 'version': '15.2(4)S6'}, {'status': 'affected', 'version': '15.2(4)S2'}, {'status': 'affected', 'version': '15.2(4)S5'}, {'status': 'affected', 'version': '15.2(4)S3'}, {'status': 'affected', 'version': '15.2(4)S3a'}, {'status': 'affected', 'version': '15.2(4)S4a'}, {'status': 'affected', 'version': '15.2(4)S7'}, {'status': 'affected', 'version': '15.3(1)T'}, {'status': 'affected', 'version': '15.3(2)T'}, {'status': 'affected', 'version': '15.3(1)T1'}, {'status': 'affected', 'version': '15.3(1)T2'}, {'status': 'affected', 'version': '15.3(1)T3'}, {'status': 'affected', 'version': '15.3(1)T4'}, {'status': 'affected', 'version': '15.3(2)T1'}, {'status': 'affected', 'version': '15.3(2)T2'}, {'status': 'affected', 'version': '15.3(2)T3'}, {'status': 'affected', 'version': '15.3(2)T4'}, {'status': 'affected', 'version': '15.0(2)EY'}, {'status': 'affected', 'version': '15.0(2)EY1'}, {'status': 'affected', 'version': '15.0(2)EY2'}, {'status': 'affected', 'version': '15.0(2)EY3'}, {'status': 'affected', 'version': '15.1(2)S'}, {'status': 'affected', 'version': '15.1(1)S'}, {'status': 'affected', 'version': '15.1(1)S1'}, {'status': 'affected', 'version': '15.1(3)S'}, {'status': 'affected', 'version': '15.1(1)S2'}, {'status': 'affected', 'version': '15.1(2)S1'}, {'status': 'affected', 'version': '15.1(2)S2'}, {'status': 'affected', 'version': '15.1(3)S1'}, {'status': 'affected', 'version': '15.1(3)S0a'}, {'status': 'affected', 'version': '15.1(3)S2'}, {'status': 'affected', 'version': '15.1(3)S4'}, {'status': 'affected', 'version': '15.1(3)S3'}, {'status': 'affected', 'version': '15.1(3)S5'}, {'status': 'affected', 'version': '15.1(3)S6'}, {'status': 'affected', 'version': '15.1(3)S5a'}, {'status': 'affected', 'version': '15.1(4)M3'}, {'status': 'affected', 'version': '15.1(4)M'}, {'status': 'affected', 'version': '15.1(4)M1'}, {'status': 'affected', 'version': '15.1(4)M2'}, {'status': 'affected', 'version': '15.1(4)M6'}, {'status': 'affected', 'version': '15.1(4)M5'}, {'status': 'affected', 'version': '15.1(4)M4'}, {'status': 'affected', 'version': '15.1(4)M7'}, {'status': 'affected', 'version': '15.1(4)M3a'}, {'status': 'affected', 'version': '15.1(4)M10'}, {'status': 'affected', 'version': '15.1(4)M8'}, {'status': 'affected', 'version': '15.1(4)M9'}, {'status': 'affected', 'version': '15.0(2)SE'}, {'status': 'affected', 'version': '15.0(2)SE1'}, {'status': 'affected', 'version': '15.0(2)SE2'}, {'status': 'affected', 'version': '15.0(2)SE3'}, {'status': 'affected', 'version': '15.0(2)SE4'}, {'status': 'affected', 'version': '15.0(2)SE5'}, {'status': 'affected', 'version': '15.0(2)SE6'}, {'status': 'affected', 'version': '15.0(2)SE7'}, {'status': 'affected', 'version': '15.0(2)SE8'}, {'status': 'affected', 'version': '15.0(2)SE9'}, {'status': 'affected', 'version': '15.0(2)SE10'}, {'status': 'affected', 'version': '15.0(2)SE11'}, {'status': 'affected', 'version': '15.0(2)SE10a'}, {'status': 'affected', 'version': '15.0(2)SE12'}, {'status': 'affected', 'version': '15.0(2)SE13'}, {'status': 'affected', 'version': '15.1(2)GC'}, {'status': 'affected', 'version': '15.1(2)GC1'}, {'status': 'affected', 'version': '15.1(2)GC2'}, {'status': 'affected', 'version': '15.1(4)GC'}, {'status': 'affected', 'version': '15.1(4)GC1'}, {'status': 'affected', 'version': '15.1(4)GC2'}, {'status': 'affected', 'version': '15.1(1)SG'}, {'status': 'affected', 'version': '15.1(2)SG'}, {'status': 'affected', 'version': '15.1(1)SG1'}, {'status': 'affected', 'version': '15.1(1)SG2'}, {'status': 'affected', 'version': '15.1(2)SG1'}, {'status': 'affected', 'version': '15.1(2)SG2'}, {'status': 'affected', 'version': '15.1(2)SG3'}, {'status': 'affected', 'version': '15.1(2)SG4'}, {'status': 'affected', 'version': '15.1(2)SG5'}, {'status': 'affected', 'version': '15.1(2)SG6'}, {'status': 'affected', 'version': '15.1(2)SG7'}, {'status': 'affected', 'version': '15.1(2)SG8'}, {'status': 'affected', 'version': '15.2(4)M'}, {'status': 'affected', 'version': '15.2(4)M1'}, {'status': 'affected', 'version': '15.2(4)M2'}, {'status': 'affected', 'version': '15.2(4)M4'}, {'status': 'affected', 'version': '15.2(4)M3'}, {'status': 'affected', 'version': '15.2(4)M5'}, {'status': 'affected', 'version': '15.2(4)M8'}, {'status': 'affected', 'version': '15.2(4)M10'}, {'status': 'affected', 'version': '15.2(4)M7'}, {'status': 'affected', 'version': '15.2(4)M6'}, {'status': 'affected', 'version': '15.2(4)M9'}, {'status': 'affected', 'version': '15.2(4)M6a'}, {'status': 'affected', 'version': '15.2(4)M11'}, {'status': 'affected', 'version': '15.2(1)GC'}, {'status': 'affected', 'version': '15.2(1)GC1'}, {'status': 'affected', 'version': '15.2(1)GC2'}, {'status': 'affected', 'version': '15.2(2)GC'}, {'status': 'affected', 'version': '15.2(3)GC'}, {'status': 'affected', 'version': '15.2(3)GC1'}, {'status': 'affected', 'version': '15.2(4)GC'}, {'status': 'affected', 'version': '15.2(4)GC1'}, {'status': 'affected', 'version': '15.2(4)GC2'}, {'status': 'affected', 'version': '15.2(4)GC3'}, {'status': 'affected', 'version': '15.1(1)SY'}, {'status': 'affected', 'version': '15.1(1)SY1'}, {'status': 'affected', 'version': '15.1(2)SY'}, {'status': 'affected', 'version': '15.1(2)SY1'}, {'status': 'affected', 'version': '15.1(2)SY2'}, {'status': 'affected', 'version': '15.1(1)SY2'}, {'status': 'affected', 'version': '15.1(1)SY3'}, {'status': 'affected', 'version': '15.1(2)SY3'}, {'status': 'affected', 'version': '15.1(1)SY4'}, {'status': 'affected', 'version': '15.1(2)SY4'}, {'status': 'affected', 'version': '15.1(1)SY5'}, {'status': 'affected', 'version': '15.1(2)SY5'}, {'status': 'affected', 'version': '15.1(2)SY4a'}, {'status': 'affected', 'version': '15.1(1)SY6'}, {'status': 'affected', 'version': '15.1(2)SY6'}, {'status': 'affected', 'version': '15.1(2)SY7'}, {'status': 'affected', 'version': '15.1(2)SY8'}, {'status': 'affected', 'version': '15.1(2)SY9'}, {'status': 'affected', 'version': '15.1(2)SY10'}, {'status': 'affected', 'version': '15.1(2)SY11'}, {'status': 'affected', 'version': '15.1(2)SY12'}, {'status': 'affected', 'version': '15.1(2)SY13'}, {'status': 'affected', 'version': '15.1(2)SY14'}, {'status': 'affected', 'version': '15.1(2)SY15'}, {'status': 'affected', 'version': '15.1(2)SY16'}, {'status': 'affected', 'version': '15.3(1)S'}, {'status': 'affected', 'version': '15.3(2)S'}, {'status': 'affected', 'version': '15.3(3)S'}, {'status': 'affected', 'version': '15.3(1)S2'}, {'status': 'affected', 'version': '15.3(1)S1'}, {'status': 'affected', 'version': '15.3(2)S2'}, {'status': 'affected', 'version': '15.3(2)S1'}, {'status': 'affected', 'version': '15.3(3)S1'}, {'status': 'affected', 'version': '15.3(3)S2'}, {'status': 'affected', 'version': '15.3(3)S3'}, {'status': 'affected', 'version': '15.3(3)S6'}, {'status': 'affected', 'version': '15.3(3)S4'}, {'status': 'affected', 'version': '15.3(3)S1a'}, {'status': 'affected', 'version': '15.3(3)S5'}, {'status': 'affected', 'version': '15.3(3)S7'}, {'status': 'affected', 'version': '15.3(3)S8'}, {'status': 'affected', 'version': '15.3(3)S9'}, {'status': 'affected', 'version': '15.3(3)S10'}, {'status': 'affected', 'version': '15.3(3)S8a'}, {'status': 'affected', 'version': '15.4(1)T'}, {'status': 'affected', 'version': '15.4(2)T'}, {'status': 'affected', 'version': '15.4(1)T2'}, {'status': 'affected', 'version': '15.4(1)T1'}, {'status': 'affected', 'version': '15.4(1)T3'}, {'status': 'affected', 'version': '15.4(2)T1'}, {'status': 'affected', 'version': '15.4(2)T3'}, {'status': 'affected', 'version': '15.4(2)T2'}, {'status': 'affected', 'version': '15.4(1)T4'}, {'status': 'affected', 'version': '15.4(2)T4'}, {'status': 'affected', 'version': '15.0(2)EA'}, {'status': 'affected', 'version': '15.0(2)EA1'}, {'status': 'affected', 'version': '15.2(1)E'}, {'status': 'affected', 'version': '15.2(2)E'}, {'status': 'affected', 'version': '15.2(1)E1'}, {'status': 'affected', 'version': '15.2(3)E'}, {'status': 'affected', 'version': '15.2(1)E2'}, {'status': 'affected', 'version': '15.2(1)E3'}, {'status': 'affected', 'version': '15.2(2)E1'}, {'status': 'affected', 'version': '15.2(4)E'}, {'status': 'affected', 'version': '15.2(3)E1'}, {'status': 'affected', 'version': '15.2(2)E2'}, {'status': 'affected', 'version': '15.2(2a)E1'}, {'status': 'affected', 'version': '15.2(2)E3'}, {'status': 'affected', 'version': '15.2(2a)E2'}, {'status': 'affected', 'version': '15.2(3)E2'}, {'status': 'affected', 'version': '15.2(3a)E'}, {'status': 'affected', 'version': '15.2(3)E3'}, {'status': 'affected', 'version': '15.2(4)E1'}, {'status': 'affected', 'version': '15.2(2)E4'}, {'status': 'affected', 'version': '15.2(2)E5'}, {'status': 'affected', 'version': '15.2(4)E2'}, {'status': 'affected', 'version': '15.2(3)E4'}, {'status': 'affected', 'version': '15.2(5)E'}, {'status': 'affected', 'version': '15.2(4)E3'}, {'status': 'affected', 'version': '15.2(2)E6'}, {'status': 'affected', 'version': '15.2(5a)E'}, {'status': 'affected', 'version': '15.2(5)E1'}, {'status': 'affected', 'version': '15.2(5b)E'}, {'status': 'affected', 'version': '15.2(2)E5a'}, {'status': 'affected', 'version': '15.2(5c)E'}, {'status': 'affected', 'version': '15.2(2)E5b'}, {'status': 'affected', 'version': '15.2(5a)E1'}, {'status': 'affected', 'version': '15.2(4)E4'}, {'status': 'affected', 'version': '15.2(2)E7'}, {'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(2)E8'}, {'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(2)E9'}, {'status': 'affected', 'version': '15.2(4)E7'}, {'status': 'affected', 'version': '15.2(7)E'}, {'status': 'affected', 'version': '15.2(2)E10'}, {'status': 'affected', 'version': '15.2(4)E8'}, {'status': 'affected', 'version': '15.2(6)E2a'}, {'status': 'affected', 'version': '15.2(6)E2b'}, {'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(7)E2a'}, {'status': 'affected', 'version': '15.2(4)E10a'}, {'status': 'affected', 'version': '15.2(7)E4'}, {'status': 'affected', 'version': '15.2(7)E3k'}, {'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': '15.2(8)E8'}, {'status': 'affected', 'version': '15.2(7)E13'}, {'status': 'affected', 'version': '15.2(2)JB'}, {'status': 'affected', 'version': '15.2(2)JB2'}, {'status': 'affected', 'version': '15.2(4)JB'}, {'status': 'affected', 'version': '15.2(2)JB3'}, {'status': 'affected', 'version': '15.2(4)JB1'}, {'status': 'affected', 'version': '15.2(4)JB3'}, {'status': 'affected', 'version': '15.2(4)JB3a'}, {'status': 'affected', 'version': '15.2(2)JB4'}, {'status': 'affected', 'version': '15.2(4)JB4'}, {'status': 'affected', 'version': '15.2(4)JB3b'}, {'status': 'affected', 'version': '15.2(4)JB3s'}, {'status': 'affected', 'version': '15.2(4)JB5'}, {'status': 'affected', 'version': '15.2(4)JB5m'}, {'status': 'affected', 'version': '15.2(4)JB6'}, {'status': 'affected', 'version': '15.2(2)JB5'}, {'status': 'affected', 'version': '15.2(2)JB6'}, {'status': 'affected', 'version': '15.4(1)S'}, {'status': 'affected', 'version': '15.4(2)S'}, {'status': 'affected', 'version': '15.4(3)S'}, {'status': 'affected', 'version': '15.4(1)S1'}, {'status': 'affected', 'version': '15.4(1)S2'}, {'status': 'affected', 'version': '15.4(2)S1'}, {'status': 'affected', 'version': '15.4(1)S3'}, {'status': 'affected', 'version': '15.4(3)S1'}, {'status': 'affected', 'version': '15.4(2)S2'}, {'status': 'affected', 'version': '15.4(3)S2'}, {'status': 'affected', 'version': '15.4(3)S3'}, {'status': 'affected', 'version': '15.4(1)S4'}, {'status': 'affected', 'version': '15.4(2)S3'}, {'status': 'affected', 'version': '15.4(2)S4'}, {'status': 'affected', 'version': '15.4(3)S4'}, {'status': 'affected', 'version': '15.4(3)S5'}, {'status': 'affected', 'version': '15.4(3)S6'}, {'status': 'affected', 'version': '15.4(3)S7'}, {'status': 'affected', 'version': '15.4(3)S6a'}, {'status': 'affected', 'version': '15.4(3)S8'}, {'status': 'affected', 'version': '15.4(3)S9'}, {'status': 'affected', 'version': '15.4(3)S10'}, {'status': 'affected', 'version': '15.2(2)JAX'}, {'status': 'affected', 'version': '15.3(3)M'}, {'status': 'affected', 'version': '15.3(3)M1'}, {'status': 'affected', 'version': '15.3(3)M2'}, {'status': 'affected', 'version': '15.3(3)M3'}, {'status': 'affected', 'version': '15.3(3)M5'}, {'status': 'affected', 'version': '15.3(3)M4'}, {'status': 'affected', 'version': '15.3(3)M6'}, {'status': 'affected', 'version': '15.3(3)M7'}, {'status': 'affected', 'version': '15.3(3)M8'}, {'status': 'affected', 'version': '15.3(3)M9'}, {'status': 'affected', 'version': '15.3(3)M10'}, {'status': 'affected', 'version': '15.3(3)M8a'}, {'status': 'affected', 'version': '15.2(1)EY'}, {'status': 'affected', 'version': '15.0(2)EJ'}, {'status': 'affected', 'version': '15.0(2)EJ1'}, {'status': 'affected', 'version': '15.2(1)SY'}, {'status': 'affected', 'version': '15.2(1)SY1'}, {'status': 'affected', 'version': '15.2(1)SY0a'}, {'status': 'affected', 'version': '15.2(1)SY2'}, {'status': 'affected', 'version': '15.2(2)SY'}, {'status': 'affected', 'version': '15.2(1)SY1a'}, {'status': 'affected', 'version': '15.2(2)SY1'}, {'status': 'affected', 'version': '15.2(2)SY2'}, {'status': 'affected', 'version': '15.2(1)SY3'}, {'status': 'affected', 'version': '15.2(1)SY4'}, {'status': 'affected', 'version': '15.2(2)SY3'}, {'status': 'affected', 'version': '15.2(1)SY5'}, {'status': 'affected', 'version': '15.2(1)SY6'}, {'status': 'affected', 'version': '15.2(1)SY7'}, {'status': 'affected', 'version': '15.2(1)SY8'}, {'status': 'affected', 'version': '15.2(5)EX'}, {'status': 'affected', 'version': '15.0(2)EK'}, {'status': 'affected', 'version': 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{'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': '7.0.8'}, {'status': 'affected', 'version': '7.0.8.1'}, {'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': '7.2.10'}, {'status': 'affected', 'version': '7.2.10.2'}, {'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': '7.4.2.3'}, {'status': 'affected', 'version': '7.4.2.4'}, {'status': 'affected', 'version': '7.6.0'}, {'status': 'affected', 'version': '7.6.1'}, {'status': 'affected', 'version': '7.6.2'}, {'status': 'affected', 'version': '7.6.2.1'}, {'status': 'affected', 'version': '7.7.0'}, {'status': 'affected', 'version': '7.7.10'}, {'status': 'affected', 'version': '7.7.10.1'}]}]
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jun. 17, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-20012', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-03-26T17:37:40.651262Z'}
  • New CVE Received by [email protected]

    Mar. 25, 2026

    Action Type Old Value New Value
    Added Description A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, and Cisco 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 on an affected device. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit of Cisco IOS Software and IOS XE Software could allow the attacker to cause the affected device to reload, resulting in a DoS condition. A successful exploit of Cisco Secure Firewall ASA Software and Secure FTD Software could allow the attacker to partially exhaust system memory, resulting in system instability, such as the inability 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-kPEpQGGK
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.