CVE-2011-2581

medium Cisco
CVSS v3 Base Score
5.0
AV:N/AC:L/Au:N/C:P/I:N/A:N
EPSS Score
0.2%
Exploitation probability in 30 days
Top 57% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
None
Availability
None
Published: September 14, 2011 (5355 days ago)
Last Modified: April 29, 2026
Vendor: Cisco
Source: NVD

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.

CWE

CWE-264

Affected Products

cisco nx-oscisco nexus 5000cisco nexus 3000

References

🔗 secunia.com 🔗 www.cisco.com 🔗 www.securitytracker.com 🔗 secunia.com 🔗 www.cisco.com