CVE-1999-1129
Cisco Catalyst 2900 VLAN - VLAN Hopping via Forged 802.1q Trunking Tag
Title source: llmDescription
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.
References (4)
Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/3294
Vendor Advisory x_refsource_misc
http://www.cisco.com/univercd/cc/td/doc/product/lan/28201900/1928v8x/eescg8x/aleakyv.htm
Patch, Vendor Advisory mailing-list
x_refsource_bugtraq
http://www.securityfocus.com/archive/1/26008
Patch, Vendor Advisory vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/615
Scores
EPSS
0.0160
EPSS Percentile
73.3%
Details
Status
published
Products (2)
cisco/catalyst_2900_vlan
cisco/ios
11.2\(8\)sa5
Published
Sep 01, 1999
Tracked Since
Feb 18, 2026