8.1
HIGH
CVSS 3.1
CVE-2025-20160
Cisco TACACS+ Unauthenticated Data Disclosure and Authentication Bypass
Overview
Description
A vulnerability in the implementation of the TACACS+ protocol in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to view sensitive data or bypass authentication. This vulnerability exists because the system does not properly check whether the required TACACS+ shared secret is configured. A machine-in-the-middle attacker could exploit this vulnerability by intercepting and reading unencrypted TACACS+ messages or impersonating the TACACS+ server and falsely accepting arbitrary authentication requests. A successful exploit could allow the attacker to view sensitive information in a TACACS+ message or bypass authentication and gain access to the affected device.
Details
INFO
Published Date :
Sept. 24, 2025, 6:15 p.m.
Last Modified :
June 17, 2026, 8:40 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
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
Address TACACS+ shared secret configuration checks to prevent data exposure and authentication bypass.
- Ensure TACACS+ shared secret is correctly configured.
- Implement authentication checks for TACACS+.
- Apply security updates if available.
- Monitor TACACS+ traffic for anomalies.
Public PoC/Exploit Available at Github
CVE-2025-20160 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2025-20160.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-tacacs-hdB7thJw |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-20160 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-2025-20160
weaknesses.
CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client
CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
CAPEC-94: Adversary in the Middle (AiTM) Adversary in the Middle (AiTM)
CAPEC-114: Authentication Abuse Authentication Abuse
CAPEC-115: Authentication Bypass Authentication Bypass
CAPEC-151: Identity Spoofing Identity Spoofing
CAPEC-194: Fake the Source of Data Fake the Source of Data
CAPEC-593: Session Hijacking Session Hijacking
CAPEC-633: Token Impersonation Token Impersonation
CAPEC-650: Upload a Web Shell to a Web Server Upload a Web Shell to a Web Server
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).
A Python based security scanner for Cisco switches, routers, Wireless Access Points and NGFW
cisco firepower-management-center firewall-configuration firewall-management firewall-rules firewalld ngfw-configuration nexus-cloud ios nx-os nx-plugin
Python HTML
Updated: 1 week, 3 days ago
1 stars
0 fork
0 watcher
Born at : March 7, 2026, 4:50 a.m.
This repo has been linked 20 different CVEs too.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-20160 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-20160 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(6)E1'}, {'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(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': '15.5(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(3)M7'}, {'status': 'affected', 'version': '15.5(3)M8'}, {'status': 'affected', 'version': '15.5(3)M9'}, {'status': 'affected', 'version': '15.5(3)M10'}, {'status': 'affected', 'version': '15.6(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(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': '15.5(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)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 IOS XE Software', 'versions': [{'status': 'affected', 'version': '3.16.8S'}, {'status': 'affected', 'version': '3.16.9S'}, {'status': 'affected', 'version': '3.16.10S'}, {'status': 'affected', 'version': '3.8.6E'}, {'status': 'affected', 'version': '3.8.7E'}, {'status': 'affected', 'version': '3.8.8E'}, {'status': 'affected', 'version': '3.8.9E'}, {'status': 'affected', 'version': '3.8.10E'}, {'status': 'affected', 'version': '3.18.5SP'}, {'status': 'affected', 'version': '3.18.6SP'}, {'status': 'affected', 'version': '3.18.7SP'}, {'status': 'affected', 'version': '3.18.8aSP'}, {'status': 'affected', 'version': '3.18.9SP'}, {'status': 'affected', 'version': '16.6.5'}, {'status': 'affected', 'version': '16.6.5a'}, {'status': 'affected', 'version': '16.6.6'}, {'status': 'affected', 'version': '16.6.7'}, {'status': 'affected', 'version': '16.6.8'}, {'status': 'affected', 'version': '16.6.9'}, {'status': 'affected', 'version': '16.6.10'}, {'status': 'affected', 'version': '16.8.1'}, {'status': 'affected', 'version': '16.8.1a'}, {'status': 'affected', 'version': '16.8.1b'}, {'status': 'affected', 'version': '16.8.1s'}, {'status': 'affected', 'version': '16.8.1c'}, {'status': 'affected', 'version': '16.8.1d'}, {'status': 'affected', 'version': '16.8.2'}, {'status': 'affected', 'version': '16.8.1e'}, {'status': 'affected', 'version': '16.8.3'}, {'status': 'affected', 'version': '16.9.1'}, {'status': 'affected', 'version': '16.9.2'}, {'status': 'affected', 'version': '16.9.1a'}, {'status': 'affected', 'version': '16.9.1b'}, {'status': 'affected', 'version': '16.9.1s'}, {'status': 'affected', 'version': '16.9.3'}, {'status': 'affected', 'version': '16.9.4'}, {'status': 'affected', 'version': '16.9.3a'}, {'status': 'affected', 'version': '16.9.5'}, {'status': 'affected', 'version': '16.9.5f'}, {'status': 'affected', 'version': '16.9.6'}, {'status': 'affected', 'version': '16.9.7'}, {'status': 'affected', 'version': '16.9.8'}, {'status': 'affected', 'version': '16.10.1'}, {'status': 'affected', 'version': '16.10.1a'}, {'status': 'affected', 'version': '16.10.1b'}, {'status': 'affected', 'version': '16.10.1s'}, {'status': 'affected', 'version': '16.10.1c'}, {'status': 'affected', 'version': '16.10.1e'}, {'status': 'affected', 'version': '16.10.1d'}, {'status': 'affected', 'version': '16.10.2'}, {'status': 'affected', 'version': '16.10.1f'}, {'status': 'affected', 'version': '16.10.1g'}, {'status': 'affected', 'version': '16.10.3'}, {'status': 'affected', 'version': '3.10.1E'}, {'status': 'affected', 'version': '3.10.2E'}, {'status': 'affected', 'version': '3.10.3E'}, {'status': 'affected', 'version': '16.11.1'}, {'status': 'affected', 'version': '16.11.1a'}, {'status': 'affected', 'version': '16.11.1b'}, {'status': 'affected', 'version': '16.11.2'}, {'status': 'affected', 'version': '16.11.1s'}, {'status': 'affected', 'version': '16.12.1'}, {'status': 'affected', 'version': '16.12.1s'}, {'status': 'affected', 'version': '16.12.1a'}, {'status': 'affected', 'version': '16.12.1c'}, {'status': 'affected', 'version': '16.12.1w'}, {'status': 'affected', 'version': '16.12.2'}, {'status': 'affected', 'version': '16.12.1y'}, {'status': 'affected', 'version': '16.12.2a'}, {'status': 'affected', 'version': '16.12.3'}, {'status': 'affected', 'version': '16.12.8'}, {'status': 'affected', 'version': '16.12.2s'}, {'status': 'affected', 'version': '16.12.1x'}, {'status': 'affected', 'version': '16.12.1t'}, {'status': 'affected', 'version': '16.12.4'}, {'status': 'affected', 'version': '16.12.3s'}, {'status': 'affected', 'version': '16.12.3a'}, {'status': 'affected', 'version': '16.12.4a'}, {'status': 'affected', 'version': '16.12.5'}, {'status': 'affected', 'version': '16.12.6'}, {'status': 'affected', 'version': '16.12.1z1'}, {'status': 'affected', 'version': '16.12.5a'}, {'status': 'affected', 'version': '16.12.5b'}, {'status': 'affected', 'version': '16.12.1z2'}, {'status': 'affected', 'version': '16.12.6a'}, {'status': 'affected', 'version': '16.12.7'}, {'status': 'affected', 'version': '16.12.9'}, {'status': 'affected', 'version': '16.12.10'}, {'status': 'affected', 'version': '16.12.10a'}, {'status': 'affected', 'version': '16.12.11'}, {'status': 'affected', 'version': '16.12.12'}, {'status': 'affected', 'version': '16.12.13'}, {'status': 'affected', 'version': '3.11.0E'}, {'status': 'affected', 'version': '3.11.1E'}, {'status': 'affected', 'version': '3.11.2E'}, {'status': 'affected', 'version': '3.11.3E'}, {'status': 'affected', 'version': '3.11.1aE'}, {'status': 'affected', 'version': '3.11.4E'}, {'status': 'affected', 'version': '3.11.3aE'}, {'status': 'affected', 'version': '3.11.5E'}, {'status': 'affected', 'version': '3.11.6E'}, {'status': 'affected', 'version': '3.11.7E'}, {'status': 'affected', 'version': '3.11.8E'}, {'status': 'affected', 'version': '3.11.9E'}, {'status': 'affected', 'version': '3.11.10E'}, {'status': 'affected', 'version': '3.11.11E'}, {'status': 'affected', 'version': '3.11.12E'}, {'status': 'affected', 'version': '17.1.1'}, {'status': 'affected', 'version': '17.1.1a'}, {'status': 'affected', 'version': '17.1.1s'}, {'status': 'affected', 'version': '17.1.1t'}, {'status': 'affected', 'version': '17.1.3'}, {'status': 'affected', 'version': '17.2.1'}, {'status': 'affected', 'version': '17.2.1r'}, {'status': 'affected', 'version': '17.2.1a'}, {'status': 'affected', 'version': '17.2.1v'}, {'status': 'affected', 'version': '17.2.2'}, {'status': 'affected', 'version': '17.2.3'}, {'status': 'affected', 'version': '17.3.1'}, {'status': 'affected', 'version': '17.3.2'}, {'status': 'affected', 'version': '17.3.3'}, {'status': 'affected', 'version': '17.3.1a'}, {'status': 'affected', 'version': '17.3.1w'}, {'status': 'affected', 'version': '17.3.2a'}, {'status': 'affected', 'version': '17.3.1x'}, {'status': 'affected', 'version': '17.3.1z'}, {'status': 'affected', 'version': '17.3.4'}, {'status': 'affected', 'version': '17.3.5'}, {'status': 'affected', 'version': '17.3.4a'}, {'status': 'affected', 'version': '17.3.6'}, {'status': 'affected', 'version': '17.3.4b'}, {'status': 'affected', 'version': '17.3.4c'}, {'status': 'affected', 'version': '17.3.5a'}, {'status': 'affected', 'version': '17.3.5b'}, {'status': 'affected', 'version': '17.3.7'}, {'status': 'affected', 'version': '17.3.8'}, {'status': 'affected', 'version': '17.3.8a'}, {'status': 'affected', 'version': '17.4.1'}, {'status': 'affected', 'version': '17.4.2'}, {'status': 'affected', 'version': '17.4.1a'}, {'status': 'affected', 'version': '17.4.1b'}, {'status': 'affected', 'version': '17.4.2a'}, {'status': 'affected', 'version': '17.5.1'}, {'status': 'affected', 'version': '17.5.1a'}, {'status': 'affected', 'version': '17.6.1'}, {'status': 'affected', 'version': '17.6.2'}, {'status': 'affected', 'version': '17.6.1w'}, {'status': 'affected', 'version': '17.6.1a'}, {'status': 'affected', 'version': '17.6.1x'}, {'status': 'affected', 'version': '17.6.3'}, {'status': 'affected', 'version': '17.6.1y'}, {'status': 'affected', 'version': '17.6.1z'}, {'status': 'affected', 'version': '17.6.3a'}, {'status': 'affected', 'version': '17.6.4'}, {'status': 'affected', 'version': '17.6.1z1'}, {'status': 'affected', 'version': '17.6.5'}, {'status': 'affected', 'version': '17.6.6'}, {'status': 'affected', 'version': '17.6.6a'}, {'status': 'affected', 'version': '17.6.5a'}, {'status': 'affected', 'version': '17.6.7'}, {'status': 'affected', 'version': '17.6.8'}, {'status': 'affected', 'version': '17.6.8a'}, {'status': 'affected', 'version': '17.7.1'}, {'status': 'affected', 'version': '17.7.1a'}, {'status': 'affected', 'version': '17.7.1b'}, {'status': 'affected', 'version': '17.7.2'}, {'status': 'affected', 'version': '17.10.1'}, {'status': 'affected', 'version': '17.10.1a'}, {'status': 'affected', 'version': '17.10.1b'}, {'status': 'affected', 'version': '17.8.1'}, {'status': 'affected', 'version': '17.8.1a'}, {'status': 'affected', 'version': '17.9.1'}, {'status': 'affected', 'version': '17.9.1w'}, {'status': 'affected', 'version': '17.9.2'}, {'status': 'affected', 'version': '17.9.1a'}, {'status': 'affected', 'version': '17.9.1x'}, {'status': 'affected', 'version': '17.9.1y'}, {'status': 'affected', 'version': '17.9.3'}, {'status': 'affected', 'version': '17.9.2a'}, {'status': 'affected', 'version': '17.9.1x1'}, {'status': 'affected', 'version': '17.9.3a'}, {'status': 'affected', 'version': '17.9.4'}, {'status': 'affected', 'version': '17.9.1y1'}, {'status': 'affected', 'version': '17.9.5'}, {'status': 'affected', 'version': '17.9.4a'}, {'status': 'affected', 'version': '17.9.5a'}, {'status': 'affected', 'version': '17.9.5b'}, {'status': 'affected', 'version': '17.9.6'}, {'status': 'affected', 'version': '17.9.6a'}, {'status': 'affected', 'version': '17.9.7'}, {'status': 'affected', 'version': '17.9.5e'}, {'status': 'affected', 'version': '17.9.5f'}, {'status': 'affected', 'version': '17.9.7a'}, {'status': 'affected', 'version': '17.9.7b'}, {'status': 'affected', 'version': '17.11.1'}, {'status': 'affected', 'version': '17.11.1a'}, {'status': 'affected', 'version': '17.12.1'}, {'status': 'affected', 'version': '17.12.1w'}, {'status': 'affected', 'version': '17.12.1a'}, {'status': 'affected', 'version': '17.12.1x'}, {'status': 'affected', 'version': '17.12.2'}, {'status': 'affected', 'version': '17.12.3'}, {'status': 'affected', 'version': '17.12.2a'}, {'status': 'affected', 'version': '17.12.1y'}, {'status': 'affected', 'version': '17.12.1z'}, {'status': 'affected', 'version': '17.12.4'}, {'status': 'affected', 'version': '17.12.3a'}, {'status': 'affected', 'version': '17.12.1z1'}, {'status': 'affected', 'version': '17.12.1z2'}, {'status': 'affected', 'version': '17.12.4a'}, {'status': 'affected', 'version': '17.12.5'}, {'status': 'affected', 'version': '17.12.4b'}, {'status': 'affected', 'version': '17.12.1z3'}, {'status': 'affected', 'version': '17.12.5a'}, {'status': 'affected', 'version': '17.12.1z4'}, {'status': 'affected', 'version': '17.12.5b'}, {'status': 'affected', 'version': '17.12.5c'}, {'status': 'affected', 'version': '17.13.1'}, {'status': 'affected', 'version': '17.13.1a'}, {'status': 'affected', 'version': '17.14.1'}, {'status': 'affected', 'version': '17.14.1a'}, {'status': 'affected', 'version': '17.11.99SW'}, {'status': 'affected', 'version': '17.15.1'}, {'status': 'affected', 'version': '17.15.1w'}, {'status': 'affected', 'version': '17.15.1a'}, {'status': 'affected', 'version': '17.15.2'}, {'status': 'affected', 'version': '17.15.1b'}, {'status': 'affected', 'version': '17.15.1x'}, {'status': 'affected', 'version': '17.15.3'}, {'status': 'affected', 'version': '17.15.2c'}, {'status': 'affected', 'version': '17.15.2a'}, {'status': 'affected', 'version': '17.15.1y'}, {'status': 'affected', 'version': '17.15.2b'}, {'status': 'affected', 'version': '17.15.3a'}, {'status': 'affected', 'version': '17.15.3b'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-20160', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2025-09-25T03:56:03.259249Z'} -
New CVE Received by [email protected]
Sep. 24, 2025
Action Type Old Value New Value Added Description A vulnerability in the implementation of the TACACS+ protocol in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to view sensitive data or bypass authentication. This vulnerability exists because the system does not properly check whether the required TACACS+ shared secret is configured. A machine-in-the-middle attacker could exploit this vulnerability by intercepting and reading unencrypted TACACS+ messages or impersonating the TACACS+ server and falsely accepting arbitrary authentication requests. A successful exploit could allow the attacker to view sensitive information in a TACACS+ message or bypass authentication and gain access to the affected device. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-287 Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-tacacs-hdB7thJw
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.