CVE-2012-0256

Apache Traffic Server 2.0.x and 3.0.x before 3.0.4 and 3.1.x before 3.1.3 does not properly...

5.0 MediumFix available

Apache Traffic Server 2.0.x and 3.0.x before 3.0.4 and 3.1.x before 3.1.3 does not properly allocate heap memory, which allows remote attackers to cause a denial of service (daemon crash) via a long HTTP Host header.

Exploit likelihood

3.43%Up 1.4 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2012-0256
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-0256
Updated: 2026-11-02

EUVDEUVD-2012-0292 No score

Record: EUVD-2012-0292
Updated: 2026-11-03

GitHub AdvisoriesGHSA-j695-8g8p-qf2x No score

Apache Traffic Server 2.0.x and 3.0.x before 3.0.4 and 3.1.x before 3.1.3 does not properly...

Record: GHSA-j695-8g8p-qf2x
Weakness: CWE-119
Updated: 2026-11-02

OSV No score

Record: CVE-2012-0256
Updated: 2026-11-02

OSVDEBIAN-CVE-2012-0256 No score

Record: DEBIAN-CVE-2012-0256
Updated: 2026-11-02

Affected products

apache traffic server

Affected packages

Affected packages
Package	Affected	Fixed
`trafficserver` Debian:12	before 3.0.4-1	3.0.4-1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-0256 is a medium vulnerability (CVSS 5.0) in Apache Traffic Server, published March 26, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.43%, the 88th percentile. Fixed in trafficserver 3.0.4-1.