CVE-2026-76641
expat: out-of-bounds read vulnerability that allows attackers to trigger
CVE-2026-76641 is fixed in 4 products on 1 platform, first by expat 2.2.5-3ubuntu0.9+esm5, released August 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0035
29th percentile
out-of-bounds read vulnerability that allows attackers to trigger
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| MozillaFirefox · opensuse-leap 16.0 | 153.5.0-160000.1.1 | OPENSUSE-SU-2026:22139-1 | Nov 7, 2026 |
| MozillaFirefox · sles 15.6 | 153.5.0-150400.157.16.1 | SUSE-SU-2026:4834-1 | Nov 7, 2026 |
| MozillaFirefox · sles 15.7 | 153.5.0-150400.157.16.1 | SUSE-SU-2026:4834-1 | Nov 7, 2026 |
| MozillaFirefox · sles 16.0 | 153.5.0-160000.1.1 | SUSE-SU-2026:24260-1 | Nov 7, 2026 |
| MozillaThunderbird · sles 15.7 | 153.5.0-150400.13.9.1 | SUSE-SU-2026:4736-1 | Nov 7, 2026 |
| expat · Ubuntu 18.04.6 LTS (bionic) | 2.2.5-3ubuntu0.9+esm5 | expat 2.2.5-3ubuntu0.9+esm5 | Aug 20, 2026 |
| expat · Ubuntu 20.04 LTS (focal) | 2.2.9-1ubuntu0.8+esm3 | expat 2.2.9-1ubuntu0.8+esm3 | Aug 20, 2026 |
| expat · Ubuntu 22.04.1 LTS (jammy) | 2.4.7-1ubuntu0.9 | expat 2.4.7-1ubuntu0.9 | Aug 20, 2026 |
| expat · Ubuntu 24.04.5 LTS (noble) | 2.6.1-2ubuntu0.6 | expat 2.6.1-2ubuntu0.6 | Aug 20, 2026 |
| expat · Ubuntu 26.04.1 LTS (resolute) | 2.7.4-1ubuntu0.2 | expat 2.7.4-1ubuntu0.2 | Aug 20, 2026 |
| expat · opensuse-leap 16.0 | 2.8.4-160000.1.1 | OPENSUSE-SU-2026:21945-1 | Sep 24, 2026 |
| expat · sles 15.6 | 2.8.5-150400.3.40.1 | SUSE-SU-2026:4623-1 | Nov 7, 2026 |
| expat · sles 15.7 | 2.8.5-150700.3.15.1 | SUSE-SU-2026:4619-1 | Nov 7, 2026 |
| expat · sles 16.0 | 2.8.4-160000.1.1 | SUSE-SU-2026:23912-1 | Sep 24, 2026 |
| libexpat1 · Ubuntu 18.04.6 LTS (bionic) | 2.2.5-3ubuntu0.9+esm5 | libexpat1 2.2.5-3ubuntu0.9+esm5 | Aug 20, 2026 |
| libexpat1 · Ubuntu 20.04 LTS (focal) | 2.2.9-1ubuntu0.8+esm3 | libexpat1 2.2.9-1ubuntu0.8+esm3 | Aug 20, 2026 |
| libexpat1 · Ubuntu 22.04.1 LTS (jammy) | 2.4.7-1ubuntu0.9 | libexpat1 2.4.7-1ubuntu0.9 | Aug 20, 2026 |
| libexpat1 · Ubuntu 24.04.5 LTS (noble) | 2.6.1-2ubuntu0.6 | libexpat1 2.6.1-2ubuntu0.6 | Aug 20, 2026 |
| libexpat1 · Ubuntu 26.04.1 LTS (resolute) | 2.7.4-1ubuntu0.2 | libexpat1 2.7.4-1ubuntu0.2 | Aug 20, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.