CVE-2013-5566

Name: CVE-2013-5566
Creator: NVD / NIST
Published: 2013-11-08T04:47:23.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.88%

Last modified Jun 16, 2026

CVE-2013-5566 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.88% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.88%

76.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Cisco	Nx-Os	<= 5.0
Cisco	Nx-Os	4.0
Cisco	Nx-Os	4.0\(0\)n1\(1a\)
Cisco	Nx-Os	4.0\(0\)n1\(2\)
Cisco	Nx-Os	4.0\(0\)n1\(2a\)
Cisco	Nx-Os	4.0\(1a\)n1\(1\)
Cisco	Nx-Os	4.0\(1a\)n1\(1a\)
Cisco	Nx-Os	4.0\(1a\)n2\(1\)
Cisco	Nx-Os	4.0\(1a\)n2\(1a\)
Cisco	Nx-Os	4.0\(4\)sv1\(1\)
Cisco	Nx-Os	4.0\(4\)sv1\(2\)
Cisco	Nx-Os	4.0\(4\)sv1\(3\)
Cisco	Nx-Os	4.0\(4\)sv1\(3a\)
Cisco	Nx-Os	4.0\(4\)sv1\(3b\)
Cisco	Nx-Os	4.0\(4\)sv1\(3c\)
Cisco	Nx-Os	4.0\(4\)sv1\(3d\)
Cisco	Nx-Os	4.1\(3\)n1\(1\)
Cisco	Nx-Os	4.1\(3\)n1\(1a\)
Cisco	Nx-Os	4.1\(3\)n2\(1\)
Cisco	Nx-Os	4.1\(3\)n2\(1a\)
Cisco	Nx-Os	4.1.\(2\)
Cisco	Nx-Os	4.1.\(3\)
Cisco	Nx-Os	4.1.\(4\)
Cisco	Nx-Os	4.1.\(5\)
Cisco	Nx-Os	4.2
Cisco	Nx-Os	4.2\(1\)
Cisco	Nx-Os	4.2\(1\)n1\(1\)
Cisco	Nx-Os	4.2\(1\)n2\(1\)
Cisco	Nx-Os	4.2\(1\)n2\(1a\)
Cisco	Nx-Os	4.2\(1\)sv1\(4\)
Cisco	Nx-Os	4.2\(1\)sv1\(4a\)
Cisco	Nx-Os	4.2\(1\)sv1\(5.1\)
Cisco	Nx-Os	4.2\(2\)
Cisco	Nx-Os	4.2\(3\)
Cisco	Nx-Os	4.2\(4\)
Cisco	Nx-Os	4.2\(6\)
Cisco	Nx-Os	4.2\(8\)
Cisco	Nx-Os	4.2.\(2a\)

References

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

Timeline

Published: Nov 8, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-5566?

How severe is CVE-2013-5566?

Severity scoring for CVE-2013-5566 is pending analysis. The EPSS model estimates a 1.88% probability of exploitation in the next 30 days.

How do I fix CVE-2013-5566?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-5566?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST