CVE-2026-14164: A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed

highCVSS 7.5CVE-2026-14164

A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-06-30
Last updated: 2026-06-30
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-14164

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-141640.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-14164	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownMultiple vulnerabilities in Microsoft Azure Linux (July 10, 2026)cert-fr-avis

Recent advisories for A double free

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-58381: A flaw was found in GIMP's PSP file format parser. A double-free condition occurs in the read_…nvd · 2026-07-02
mediumCVE-2026-8925: SASL double-freemsrc · 2026-07-02
mediumCVE-2026-43706: A double free issue was addressed with improved memory management. This issue is fixed in iOS …nvd · 2026-06-29
unknownCVE-2026-53286: In the Linux kernel, the following vulnerability has been resolved: idpf: fix double free and …nvd · 2026-06-26
unknownCVE-2026-12043 - Heap double-free in AWS Common Runtime aws-c-httpaws · 2026-06-12
criticalCVE-2026-52993: tipc: fix double-free in tipc_buf_append()msrc · 2026-06-09