What is CVE-2025-20160?

CVE-2025-20160 is a high-severity vulnerability in Cisco Ios Xe Software, classified under Improper Authentication. CVSS score: 8.1/10. Published 2025-09-24.

How severe is CVE-2025-20160?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Cisco Ios Xe Software

CVE-2025-20160

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 be…

Vulnerability class: Broken Authentication

EPSS: 0.001 (25.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Ios Xe Software — versions 3.16.8S, 3.16.9S, 3.16.10S
Cisco Ios — versions 15.2(6)E1, 15.2(4)E6, 15.2(6)E2

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

cisco-sa-ios-tacacs-hdB7thJw

Frequently asked questions

What is CVE-2025-20160?: CVE-2025-20160 is a high-severity vulnerability in Cisco Ios Xe Software, classified under Improper Authentication. CVSS score: 8.1/10. Published 2025-09-24.
How severe is CVE-2025-20160?: High severity. CVSS v3 base score is 8.1 out of 10.