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CVE-2017-12182

28
FAUCET Score

CVE-2017-12182 describes a critical vulnerability in xorg-x11-server versions prior to 1.19.5, affecting Debian and X.Org X servers. A missing length validation in the XFree86 DRI extension allows a malicious X client to crash the X server or potentially execute arbitrary code. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*:*:*:*:*
< 1.19.5CPE matchmatch criteria
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.23%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0423 is in the 83rd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Patch Available

Vendor Patches (4)

redhatpatch availablevia nvd_reference
View patch
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-2017-12182Moderate

xorg-x11-server: unvalidated lengths in XFree86 DRI extension

Oct 10, 2017

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party AdvisoryVDB Entry
cgit.freedesktop.org / xorg/xserver/commit
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2017/11/msg00032.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201711-05
Third Party AdvisoryVDB Entry
debian.org / security/2017/dsa-4000
Third Party Advisory