CVE-2026-94286: x.org libxtst Buffer Over-read
CVSS: 7.1v3.1HighAwaiting analysis
AliasesSUSE-SU-2026:4565-1SUSE-SU-2026:4566-1RHSA-2026:79192UBUNTU-CVE-2026-94286DEBIAN-CVE-2026-94286openSUSE-SU-2026:11897-1openSUSE-SU-2026:22031-1SUSE-SU-2026:24145-1ALPINE-CVE-2026-94286
Published 28-09-2026Last modified 30-09-2026
Vulnerability summary
CVE-2026-94286 is a high (CVSS 7.1) Buffer Over-read vulnerability in x.org libxtst. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.5% of scored vulnerabilities.
CVSS score
7.1/10
010
High · v3.1 (CVE.org)EPSS score
0.18%
0%100%
Low · Change unavailableKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 28-09-2026PublishedVulnerability first disclosed.
- 30-09-2026Last modifiedVulnerability information updated.
Description
An out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.
CVSS metrics
6 scores · 6 sources · 1 versionHigh 7.1Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HSourcesAll 6 agree
- OSV · Red hatEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- NVDNIST7.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
28-09-202619-10-2026
EPSS score0.18%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse18 products
- libXtst&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 1.2.3-150000.3.3.1
- libXtst&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 1.2.3-150000.3.3.1
- libXtst&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 1.2.3-150000.3.3.1
- libXtst&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS< 1.2.3-150000.3.3.1
- libXtst&distro=SUSE Linux Enterprise Micro 5.3< 1.2.3-150000.3.3.1
Opensuse2 products
- libXtst&distro=openSUSE Leap 16.0< 1.2.5-160000.4.1
- libXtst&distro=openSUSE Tumbleweed< 1.2.5-2.1
Redhat2 products
- libXtst< 0:1.2.5-5.1.hum1
- libXtst-devel< 0:1.2.5-5.1.hum1
Alpine1 product
- libxtst< 1.2.6-r0
Debian1 product
- libxtstAll versions (No fix recorded)
Ubuntu1 product
- libxtstAll versions (No fix recorded)
X.org1 product
- libxtst< 1.2.6
7 vendors · 26 products
References
18 links- images.redhat.comARTICLE
