CVE-2026-88340

Published: Sep 22, 2026Modified: Sep 25, 2026

7.6

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Exploitability: 2.8 / Impact: 4.7

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Related CWEs

CWE-763

Release of Invalid Pointer or Reference

The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

References (3)

https://github.com/VirusTotal/yara/issues/2239

Source: cve@mitre.org

https://github.com/VirusTotal/yara/pull/2244

Source: cve@mitre.org

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

Source: cve@mitre.org

Timeline

No history available yet.