CVE-2013-5566

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-11-08 · updated 2026-06-16
Weakness: CWE-119

Description

Cisco NX-OS 5.0 and earlier on MDS 9000 devices allows remote attackers to cause a denial of service (supervisor CPU consumption) via Authentication Header (AH) authentication in a Virtual Router Redundancy Protocol (VRRP) frame, aka Bug ID CSCte27874.

Affected products

Cisco NX-OS: through 5.0; 4.0, 4.0(0)n1(1a), 4.0(0)n1(2), 4.0(0)n1(2a), 4.0(1a)n1(1), 4.0(1a)n1(1a) (+31)

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5566
http://tools.cisco.com/security/center/viewAlert.x?alertId=31663
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5566
http://tools.cisco.com/security/center/viewAlert.x?alertId=31663

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