---
id: CVE-1999-0161
title: >-
  In Cisco IOS 10.3, with the tacacs-ds or tacacs keyword, an extended IP access
  control list could bypass filtering.
summary: >-
  In Cisco IOS 10.3, with the tacacs-ds or tacacs keyword, an extended IP access
  control list could bypass filtering.
severity: high
cvss: 7.5
cvssVector: 'AV:N/AC:L/Au:N/C:P/I:P/A:P'
published: '1995-07-31'
updated: '2026-06-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-1999-0161'
references:
  - url: 'http://www.osvdb.org/797'
    label: cve@mitre.org
  - url: 'http://www.osvdb.org/797'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.017
epssPercentile: 0.76215
ingestedAt: '2026-06-19T03:39:00.755Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.