CVE-2003-0031

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service ...

7.5 HighFix available

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Exploit likelihood

1.73%Up 0.6 points since Feb 4, 2022

What each source reports

NVD Score used7.5

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Record: CVE-2003-0031
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE ListNo score

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Record: CVE-2003-0031
Updated: 2026-11-02

EUVDEUVD-2003-0031No score

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Record: EUVD-2003-0031
Updated: 2026-11-03

GitHub AdvisoriesGHSA-9m5c-xf3g-pwxwNo score

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service ...

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Record: GHSA-9m5c-xf3g-pwxw
Updated: 2026-11-02

OSVNo score

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Record: CVE-2003-0031
Updated: 2026-11-02

OSVDEBIAN-CVE-2003-0031No score

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Record: DEBIAN-CVE-2003-0031
Updated: 2026-11-02

Affected products

mcrypt libmcrypt

Affected packages

Affected packages
Package	Affected	Fixed
`libmcrypt` Debian:12	before 2.5.5-1	2.5.5-1
`libmcrypt` Debian:13	before 2.5.5-1	2.5.5-1
`libmcrypt` Debian:14	before 2.5.5-1	2.5.5-1
`libmcrypt` Debian:3.0 From an advisory covering 2 CVEs	before 2.5.0-1woody1, plus listed versions 2.5.0-1	2.5.0-1woody1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
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-2003-0031 is a high vulnerability (CVSS 7.5) in Mcrypt Libmcrypt, published January 14, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.73%, the 77th percentile. Fixed in libmcrypt 2.5.5-1.

Exploit likelihood

What each source reports

Affected products

Affected packages

History

In short

References