CVE-1999-0160: Some classic Cisco IOS devices have a vulnerability in the PPP CHAP authentication to establish unauthorized PPP connect
Summary
Some classic Cisco IOS devices have a vulnerability in the PPP CHAP authentication to establish unauthorized PPP connections.
Severity
UNKNOWN
Source Attribution
Source: NVD · Updated: 2026-08-21T04:30:39.357Z · Confidence: high
Impact
Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.
Affected Software
Fix
Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.