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CVE WatchSep 22, 2026

CVE-2026-88340

An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is cause

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 22, 2026 · Last modified: Sep 22, 2026

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references
Related CVEs

No related CVEs by CWE or product.