CVE-2026-94286
Out-of-bounds read in libXtst's RECORD reply parser
CVE-2026-94286 is fixed in 6 products on 1 platform, first by libxtst6 2:1.2.5-1ubuntu0.1, released September 28, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.1
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0020
10th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libXtst · RHEL 10 | 1.2.4-8.el10_0.1 | RHSA-2026:93448 | Sep 28, 2026 |
| libXtst · RHEL 8 | 0:1.2.3-8.el8_10 | RHSA-2026:91294 | Oct 29, 2026 |
| libXtst · RHEL 9 | 0:1.2.3-16.el9_8.1 | RHSA-2026:91223 | Oct 30, 2026 |
| libXtst · almalinux 10 | 1.2.4-8.el10_2.1 | ALSA-2026:91612 | Nov 7, 2026 |
| libXtst · almalinux 8 | 1.2.3-8.el8_10 | ALSA-2026:91294 | Nov 7, 2026 |
| libXtst · almalinux 9 | 1.2.3-16.el9_8.1 | ALSA-2026:91223 | Nov 7, 2026 |
| libXtst · amzn 2023 | 1.2.5-1.amzn2023.0.2 | ALAS2023-2026-3259 | Nov 7, 2026 |
| libXtst · ol 10 | 0:1.2.4-8.el10_2.1 | ELSA-2026-91612 | Nov 7, 2026 |
| libXtst · ol 8 | 0:1.2.3-8.el8_10 | ELSA-2026-91294 | Nov 7, 2026 |
| libXtst · ol 9 | 0:1.2.3-16.el9_8.1 | ELSA-2026-91223 | Nov 7, 2026 |
| libXtst · opensuse-leap 16.0 | 1.2.5-160000.4.1 | OPENSUSE-SU-2026:22031-1 | Oct 6, 2026 |
| libXtst · rocky 10 | 0:1.2.4-8.el10_2.1 | RLSA-2026:91612 | Nov 7, 2026 |
| libXtst · rocky 8 | 0:1.2.3-8.el8_10 | RLSA-2026:91294 | Nov 7, 2026 |
| libXtst · rocky 9 | 0:1.2.3-16.el9_8.1 | RLSA-2026:91223 | Nov 7, 2026 |
| libXtst · sles 15.6 | 1.2.3-150000.3.3.1 | SUSE-SU-2026:4566-1 | Oct 7, 2026 |
| libXtst · sles 15.7 | 1.2.3-150000.3.3.1 | SUSE-SU-2026:4566-1 | Oct 7, 2026 |
| libXtst · sles 16.0 | 1.2.5-160000.4.1 | SUSE-SU-2026:24145-1 | Oct 6, 2026 |
| libXtst-debuginfo · amzn 2023 | 1.2.5-1.amzn2023.0.2 | ALAS2023-2026-3259 | Nov 7, 2026 |
| libXtst-debugsource · amzn 2023 | 1.2.5-1.amzn2023.0.2 | ALAS2023-2026-3259 | Nov 7, 2026 |
| libXtst-devel · RHEL 8 | 0:1.2.3-8.el8_10 | RHSA-2026:91294 | Oct 29, 2026 |
| libXtst-devel · RHEL 9 | 0:1.2.3-16.el9_8.1 | RHSA-2026:91223 | Oct 30, 2026 |
| libXtst-devel · almalinux 10 | 1.2.4-8.el10_2.1 | ALSA-2026:91612 | Nov 7, 2026 |
| libXtst-devel · almalinux 8 | 1.2.3-8.el8_10 | ALSA-2026:91294 | Nov 7, 2026 |
| libXtst-devel · almalinux 9 | 1.2.3-16.el9_8.1 | ALSA-2026:91223 | Nov 7, 2026 |
| libXtst-devel · amzn 2023 | 1.2.5-1.amzn2023.0.2 | ALAS2023-2026-3259 | Nov 7, 2026 |
| libXtst-devel · ol 10 | 0:1.2.4-8.el10_2.1 | ELSA-2026-91612 | Nov 7, 2026 |
| libXtst-devel · ol 8 | 0:1.2.3-8.el8_10 | ELSA-2026-91294 | Nov 7, 2026 |
| libXtst-devel · ol 9 | 0:1.2.3-16.el9_8.1 | ELSA-2026-91223 | Nov 7, 2026 |
| libxtst · Debian 14 | 2:1.2.6-1 | DEBIAN-CVE-2026-94286 | Sep 28, 2026 |
| libxtst6 · Ubuntu 18.04.6 LTS (bionic) | 2:1.2.3-1ubuntu0.18.04.1~esm1 | libxtst6 2:1.2.3-1ubuntu0.18.04.1~esm1 | Oct 21, 2026 |
| libxtst6 · Ubuntu 20.04 LTS (focal) | 2:1.2.3-1ubuntu0.20.04.1~esm1 | libxtst6 2:1.2.3-1ubuntu0.20.04.1~esm1 | Oct 21, 2026 |
| libxtst6 · Ubuntu 22.04.1 LTS (jammy) | 2:1.2.3-1ubuntu0.22.04.1 | libxtst6 2:1.2.3-1ubuntu0.22.04.1 | Oct 21, 2026 |
| libxtst6 · Ubuntu 24.04.5 LTS (noble) | 2:1.2.3-1.1ubuntu0.1 | libxtst6 2:1.2.3-1.1ubuntu0.1 | Oct 21, 2026 |
| libxtst6 · Ubuntu 26.04.1 LTS (resolute) | 2:1.2.5-1ubuntu0.1 | libxtst6 2:1.2.5-1ubuntu0.1 | Sep 28, 2026 |
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