Use After Free Affecting texlive package, versions [,78081)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-TEXLIVE-18302532
- published25 Jul 2026
- disclosed21 Jul 2026
- creditUnknown
Introduced: 21 Jul 2026
NewCVE-2026-63729 (opens in a new tab)How to fix?
Upgrade texlive to version 78081 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free via the synctex_parser.c process. An attacker can cause applications to crash or potentially execute arbitrary code by supplying a specially crafted .synctex or .synctex.gz file that triggers recursive freeing of live tree nodes, resulting in dangling pointers that are later accessed during document load.