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Unrated severityNVD Advisory· Published Sep 14, 2011· Updated Apr 29, 2026

CVE-2011-2581

CVE-2011-2581

Description

The ACL implementation in Cisco NX-OS 5.0(2) and 5.0(3) before 5.0(3)N2(1) on Nexus 5000 series switches, and NX-OS before 5.0(3)U1(2a) on Nexus 3000 series switches, does not properly handle comments in conjunction with deny statements, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by sending packets, aka Bug IDs CSCto09813 and CSCtr61490.

Affected products

12
  • Cisco Systems, Inc./Nx Os10 versions
    cpe:2.3:a:cisco:nx-os:5.0\(2\):*:*:*:*:*:*:*+ 9 more
    • cpe:2.3:a:cisco:nx-os:5.0\(2\):*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:nx-os:5.0\(3\)n1\(1\):*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:nx-os:5.0\(3\)n1\(1a\):*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:nx-os:5.0\(3\)n1\(1b\):*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*range: <=5.0\(3\)u1\(2\)
    • cpe:2.3:o:cisco:nx-os:5.0\(3\):*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:nx-os:5.0\(3\)n1\(1c\):*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:nx-os:5.0\(3\)u1\(1a\):*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:nx-os:5.0\(3\)u1\(1b\):*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:nx-os:5.0\(3\)u1\(1d\):*:*:*:*:*:*:*
  • Cisco Systems, Inc./Nexus 3000
    cpe:2.3:h:cisco:nexus_3000:*:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Nexus 5000
    cpe:2.3:h:cisco:nexus_5000:*:*:*:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

3

News mentions

0

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