CVE detail

CVE-1999-1129 — CVE-1999-1129

Published 1999-09-01 · Modified 2026-06-16 · Vendor cisco · Product ios · Source nvd

UNKNOWN

severity

CVSS-derived band

n/a

CVSS v3

0–10 scale

0.0160

EPSS probability

exploitation probability, 30d

73.0%

EPSS percentile

percentile vs all CVEs

NOT LISTED

CISA KEV

known exploited catalog

Description

Cisco Catalyst 2900 Virtual LAN (VLAN) switches allow remote attackers to inject 802.1q frames into another VLAN by forging the VLAN identifier in the trunking tag.

Remediation

Product	Vulnerable range	Fixed version	Advisory
n/a n/a	—	not specified	advisory ↗

References

NVD entry ↗
CVE.org record ↗
https://exchange.xforce.ibmcloud.com/vulnerabilities/3294

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