CVE-1999-1129 — HIGH severity vulnerability (Cisco Catalyst 2900 Virtual LAN (VLAN) switches allow remote)
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.
| CVE ID | CVE-1999-1129 |
|---|---|
| Severity | HIGH |
| CVSS score | 7.5 |
| CVSS vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| CWE | NVD-CWE-Other |
| Status | Modified |
| Published | 1999-09-01 |
| Last modified | 2026-04-16 |
| 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. |
| Source | NIST National Vulnerability Database |
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