CVE-2003-0031

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

Published: 2003-01-17 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-0031 is rated Moderate Risk (57/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.73%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2003-0031

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.79% 1.73% +0.94%
2 2025-03-17 0.44% 0.79% +0.35%
3 2023-03-07 — 0.44% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-0031

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2003-0031

OS Trackers for CVE-2003-0031

vendor priority summary link
debian not yet assigned CVE-2003-0031 not yet assigned priority: Debian including 1 source packages (libmcrypt), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2003-0031

Affected software / configurations for CVE-2003-0031

Vendor Product Version Raw CPE
mcrypt libmcrypt 2.5.1_r4 cpe:2.3:a:mcrypt:libmcrypt:2.5.1_r4:*:*:*:*:*:*:*
mcrypt libmcrypt 2.5.2 cpe:2.3:a:mcrypt:libmcrypt:2.5.2:*:*:*:*:*:*:*
mcrypt libmcrypt 2.5.3 cpe:2.3:a:mcrypt:libmcrypt:2.5.3:*:*:*:*:*:*:*
mcrypt libmcrypt 2.5_.0 cpe:2.3:a:mcrypt:libmcrypt:2.5_.0:*:*:*:*:*:*:*

References for CVE-2003-0031

cvelogic Threat Intelligence