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CVE-2013-1997

18
FAUCET Score

CVE-2013-1997 describes multiple buffer overflow vulnerabilities in X.org libX11 versions 1.5.99.901 (1.6 RC1) and earlier. These flaws allow a malicious X server to trigger a denial of service (crash) and potentially execute arbitrary code on a client system by sending specially crafted length or index values to various X11 functions. The vulnerability has a CVSS score of 6.8 (Medium), indicating a network-based attack with medium complexity, potentially leading to partial confidentiality, integrity, and availability impacts. The EPSS score is low, suggesting a low probability of exploitation in the wild. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, consistent with the majority of older vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.99.901CPE matchmatch criteria
cpe:2.3:a:x:libx11:*:*:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:x:libx11:1.5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.11%
Probability of exploitation in next 30 days
EPSS Percentile
79.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0211 is in the 67th percentile among its peer group of 19,953 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (23)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libdmx-0:1.1.3-3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libX11-0:1.6.0-2.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxcb-0:1.9.1-2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXcursor-0:1.1.14-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXext-0:1.3.2-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXfixes-0:5.0.1-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXi-0:1.7.2-2.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXinerama-0:1.1.3-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXp-0:1.0.2-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXrandr-0:1.4.1-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXrender-0:0.9.8-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXres-0:1.0.7-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXt-0:1.1.4-6.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXtst-0:1.2.2-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXv-0:1.0.9-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXvMC-0:1.0.8-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXxf86dga-0:1.1.4-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXxf86vm-0:1.1.3-2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xcb-proto-0:1.8-3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xkeyboard-config-0:2.11-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xorg-x11-proto-devel-0:7.7-9.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xorg-x11-xtrans-devel-0:1.3.4-1.el6
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libX11

Vendor Advisories (1)

redhatCVE-2013-1997Moderate

libX11: Multiple Array Index error leading to heap-based OOB write

May 23, 2013

References

lists.fedoraproject.org / pipermail/package-announce/2013-May/106781.html
debian.org / security/2013/dsa-2693
openwall.com / lists/oss-security/2013/05/23/3
ubuntu.com / usn/USN-1854-1
x.org / wiki/Development/Security/Advisory-2013-05-23
Vendor Advisory