CVE-2012-0255

What it is

The BGP implementation in bgpd in Quagga before 0.99.20.1 does not properly use message buffers for OPEN messages, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a message associated with a malformed Four-octet AS Number Capability (aka AS4 capability).

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

3.5% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2012-04-05 13:25 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:36 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.5% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2012-04-05 13:25 UTC

Last modified

2026-06-16 23:36 UTC

Exploit probability

3.5% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Quagga ≤ 0.99.20
• Quagga 0.95
• Quagga 0.96
• Quagga 0.96.1
• Quagga 0.96.2
• Quagga 0.96.3
• Quagga 0.96.4
• Quagga 0.96.5

Attack profile CVSS 2.0 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Is it in your code?

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