CVE-1999-0161: Cisco IOS

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

In Cisco IOS 10.3, with the tacacs-ds or tacacs keyword, an extended IP access control list could bypass filtering.

Affected products

• Cisco IOS: version 10.3(3.4) only; version 10.3(4.2) only

Published 1995-07-31. Last modified 2026-06-16.