VULNERABILITY INTELLIGENCE
CVE-1999-1129
CVSS score7.5 HIGH
EPSS probability1.59%
CISA KEVNot currently listed
Published1999-09-01
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:P/A:P
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.
Primary references
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Patch, Vendor Advisory
- cve@mitre.org — Patch, Vendor Advisory
- cve@mitre.org
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108