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CVE-2017-13723

26
FAUCET Score

CVE-2017-13723 is a high-severity buffer overflow vulnerability affecting X.Org Server versions prior to 1.19.4, impacting Debian Linux distributions. A local, authenticated attacker can exploit this flaw by injecting large or malformed XKB-related atoms, leading to X server crashes or potentially other system issues. With a CVSS score of 7.8, the attack requires local access but has low complexity, resulting in high impacts to confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.19.3CPE matchmatch criteria
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 76th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xorg-x11-server
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xorg-x11-server
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xorg-x11-server

Vendor Advisories (1)

redhatCVE-2017-13723Low

xorg-x11-server: Global buffer overflow in xkbtext.c

Oct 4, 2017

References

cgit.freedesktop.org / xorg/xserver/commit
Third Party Advisory
lists.debian.org / debian-lts-announce/2017/11/msg00032.html
lists.x.org / archives/xorg-announce/2017-October/002808.html
Vendor Advisory
security.gentoo.org / glsa/201710-30
Third Party Advisory
debian.org / security/2017/dsa-4000
Third Party Advisory
openwall.com / lists/oss-security/2017/10/04/10
Mailing ListThird Party Advisory
securityfocus.com / bid/101253
Third Party AdvisoryVDB Entry