VULNERABILITY INTELLIGENCE
CVE-2011-2581
CVSS score5 MEDIUM
EPSS probability1.99%
CISA KEVNot currently listed
Published2011-09-14
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N
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.