CVE-2011-2581

no score yetEPSS 2.0%

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.

EPSS: 2.0% chance of exploitation in the next 30 days; higher than 80% of CVEs (scores of 2026-10-31)
CWE: CWE-264
Published: 2011-09-14
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

cisco:nexus_3000
cisco:nexus_5000
cisco:nx-os

References

http://secunia.com/advisories/45883
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml
http://www.securitytracker.com/id?1026019
http://secunia.com/advisories/45883
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml

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