CVE-2026-88340EPSS p14.8%

CVE-2026-88340CVE-2026-88340

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.

Scoring

CVSS 7.6 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
EPSS0.25% probability of exploitation · percentile 14.8% · 2026-10-05T12:00:23Z
Last modified2026-09-25
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.