CVE-2011-4007

Severity: medium (CVSS 5.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-05-02 · updated 2026-06-16
Weakness: CWE-20

Description

Cisco IOS 15.0 and 15.1 and IOS XE 3.x do not properly handle the "set mpls experimental imposition" command, which allows remote attackers to cause a denial of service (device crash) via network traffic that triggers (1) fragmentation or (2) reassembly, aka Bug ID CSCtr56576.

Affected products

Cisco IOS: 15.0, 15.1
Cisco IOS XE: 3.1.0s, 3.1.0sg, 3.1.1s, 3.1.1sg, 3.1.2s, 3.1.3s (+13)

References

http://www.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_33s.html
http://www.securitytracker.com/id?1027005
http://www.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_33s.html
http://www.securitytracker.com/id?1027005

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