CVE-2026-88340

HIGH 7.6

CVSS Score

7.6

EPSS Score

0.2%

EPSS Percentile

5th

An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.

Vendor	n/a
Product	n/a
Published	Sep 22, 2026
Last Updated	Sep 25, 2026

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Affected Versions

n/a / n/a

n/a

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/VirusTotal/yara/issues/2239 github.com: https://github.com/VirusTotal/yara/pull/2244 github.com: https://github.com/VirusTotal/yara/pull/2244/changes/8d7bef643ee5fa2381e235bcedf80170a6b00d3b