CVE-2013-1178

What it is

Multiple buffer overflows in the Cisco Discovery Protocol (CDP) implementation in Cisco NX-OS on Nexus 7000 devices 4.x and 5.x before 5.2(4) and 6.x before 6.1(1), Nexus 5000 and 5500 devices 4.x and 5.x before 5.1(3)N1(1), Nexus 4000 devices before 4.1(2)E1(1h), Nexus 3000 devices 5.x before 5.0(3)U3(1), Nexus 1000V devices 4.x before 4.2(1)SV1(5.1), MDS 9000 devices 4.x and 5.x before 5.2(4), Unified Computing System (UCS) 6100 and 6200 devices before 2.0(2m), and Connected Grid Router (CGR) 1000 devices before CG4(1) allow remote attackers to execute arbitrary code via malformed CDP packets, aka Bug IDs CSCtu10630, CSCtu10551, CSCtu10550, CSCtw56581, CSCtu10548, CSCtu10544, and CSCuf61275.

At a glance

Exploitability

Can be exploited from the same network segment without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

1.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2013-04-25 10:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:50 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.4% in the next 30 days (EPSS).
• Severity: 8.3 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2013-04-25 10:55 UTC

Last modified

2026-06-16 23:50 UTC

Exploit probability

1.4% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• 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\(1a\)

Attack profile CVSS 2.0 · 8.3

Attack vector

Adjacent network

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

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