PT-1999-1128 · Cisco · Cisco Ios

Published 1999-04-01 · Updated 2026-04-16 · CVE-1999-0445

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Name of the Vulnerable Software and Affected Versions Cisco IOS versions prior to 12.0 with NAT

Description The issue affects Cisco routers running certain versions of IOS 12.0 with NAT enabled, where some packets may bypass input access list filters.

Recommendations For versions of Cisco IOS prior to 12.0 with NAT, update to a version that includes the fix for this issue to ensure proper filtering of packets by input access list filters.

Fix

Related Identifiers

CVE-1999-0445

Affected Products

Cisco Ios

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-1999-0445 · Security Note
• https://twitter.com/joeklein/status/2044865220288385242 · Twitter Post
• http://osvdb.org/1104 · Note