CVE-2013-1991

Multiple integer overflows in X.org libXxf86dga 1.1.3 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) XDGAQueryModes and (2) XDGASetMode functions.

Published: 2013-06-15 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1991 is rated Moderate Risk (50.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.26%). 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-2013-1991

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 0.68% 1.26% +0.58%
2 2025-07-13 0.55% 0.68% +0.14%
3 2025-03-30 — 0.55% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1991

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2013-1991

OS Trackers for CVE-2013-1991

vendor priority summary link
debian not yet assigned CVE-2013-1991 not yet assigned priority: Debian including 1 source packages (libxxf86dga), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-1991
gentoo high CVE-2013-1991: 1 GLSA(s) (201405-07), 1 atom(s) (x11-base/xorg-server); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-1991
redhat medium — https://access.redhat.com/security/cve/CVE-2013-1991
suse medium — https://www.suse.com/security/cve/CVE-2013-1991/
ubuntu medium CVE-2013-1991 medium priority: Ubuntu including 1 source packages (libxxf86dga), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): released 3, ignored 1, pending 1. https://ubuntu.com/security/CVE-2013-1991

Affected software / configurations for CVE-2013-1991

Vendor Product Version Raw CPE
x libxxf86dga <= 1.1.3 cpe:2.3:a:x:libxxf86dga:*:*:*:*:*:*:*:*
x libxxf86dga 1.0.1 cpe:2.3:a:x:libxxf86dga:1.0.1:*:*:*:*:*:*:*
x libxxf86dga 1.0.2 cpe:2.3:a:x:libxxf86dga:1.0.2:*:*:*:*:*:*:*
x libxxf86dga 1.0.99.1 cpe:2.3:a:x:libxxf86dga:1.0.99.1:*:*:*:*:*:*:*
x libxxf86dga 1.0.99.2 cpe:2.3:a:x:libxxf86dga:1.0.99.2:*:*:*:*:*:*:*
x libxxf86dga 1.1 cpe:2.3:a:x:libxxf86dga:1.1:*:*:*:*:*:*:*
x libxxf86dga 1.1.1 cpe:2.3:a:x:libxxf86dga:1.1.1:*:*:*:*:*:*:*
x libxxf86dga 1.1.2 cpe:2.3:a:x:libxxf86dga:1.1.2:*:*:*:*:*:*:*

References for CVE-2013-1991

cvelogic Threat Intelligence