CVE-1999-0160

Cisco IOS - Unauthenticated PPP Connection Establishment via CHAP Bypass

Title source: llm
STIX 2.1

Description

Some classic Cisco IOS devices have a vulnerability in the PPP CHAP authentication to establish unauthorized PPP connections.

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/1099

Scores

EPSS 0.0123
EPSS Percentile 65.9%

Details

Status published
Products (7)
cisco/ios 4.1
cisco/ios 9.1
cisco/ios 10.3
cisco/ios 11.0
cisco/ios 11.1
cisco/ios 11.2
cisco/ios 11.2p
Published Oct 01, 1997
Tracked Since Feb 18, 2026