8.1
High
CVE-2025-20160 A vulnerability in the implementation of the TACACS+ protocol in Cisco IOS Software and Cisco IOS XE Software could…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| IOS | Versions not published | |
| Cisco IOS XE Software 17.15 | 17.15.1w → 17.15.3 | No fix stated |
| Cisco IOS XE Software 17.14 | 17.14.1a → 17.14.1 | No fix stated |
| Cisco IOS XE Software 17.13 | 17.13.1a → 17.13.1 | No fix stated |
| Cisco IOS XE Software 17.12 | 17.12.1w → 17.12.5 | No fix stated |
| Cisco IOS XE Software 17.11 | 17.11.1a → 17.11.99SW | No fix stated |
| Cisco IOS XE Software 17.10 | 17.10.1a → 17.10.1 | No fix stated |
| Cisco IOS XE Software 17.9 | 17.9.1w → 17.9.7 | No fix stated |
| Cisco IOS XE Software 17.8 | 17.8.1a → 17.8.1 | No fix stated |
Show the 18 other branches Hide the 18 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XE Software 17.7 | 17.7.1a → 17.7.2 | No fix stated |
| Cisco IOS XE Software 17.6 | 17.6.1w → 17.6.8 | No fix stated |
| Cisco IOS XE Software 17.5 | 17.5.1a → 17.5.1 | No fix stated |
| Cisco IOS XE Software 17.4 | 17.4.1a → 17.4.2 | No fix stated |
| Cisco IOS XE Software 17.3 | 17.3.1w → 17.3.8 | No fix stated |
| Cisco IOS XE Software 17.2 | 17.2.1r → 17.2.3 | No fix stated |
| Cisco IOS XE Software 17.1 | 17.1.1s → 17.1.3 | No fix stated |
| Cisco IOS XE Software 16.12 | 16.12.1s → 16.12.13 | No fix stated |
| Cisco IOS XE Software 16.11 | 16.11.1s → 16.11.2 | No fix stated |
| Cisco IOS XE Software 16.10 | 16.10.1s → 16.10.3 | No fix stated |
| Cisco IOS XE Software 16.9 | 16.9.1s → 16.9.8 | No fix stated |
| Cisco IOS XE Software 16.8 | 16.8.1s → 16.8.3 | No fix stated |
| Cisco IOS XE Software 16.6 | 16.6.5a → 16.6.10 | No fix stated |
| Cisco IOS XE Software 3.18 | 3.18.5SP → 3.18.9SP | No fix stated |
| Cisco IOS XE Software 3.16 | 3.16.8S → 3.16.10S | No fix stated |
| Cisco IOS XE Software 3.11 | 3.11.0E → 3.11.12E | No fix stated |
| Cisco IOS XE Software 3.10 | 3.10.1E → 3.10.3E | No fix stated |
| Cisco IOS XE Software 3.8 | 3.8.6E → 3.8.10E | No fix stated |
References
- cisco-sa-ios-tacacs-hdB7thJw sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
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