CVE-2025-5914

A vulnerability has been identified in the libarchive library, specifically within the archive_read_format_rar_seek_data() function. This flaw involves an integer overflow that can ultimately lead to a double-free condition. Exploiting a double-free vulnerability can result in memory corruption, enabling an attacker to execute arbitrary code or cause a denial-of-service condition.

What this means for your business

It affects Libarchive. It matters if your company, or a supplier that handles your data, runs it.
Code showing how to exploit it has been published, but real attacks have not been confirmed.
An attacker can use it only with access to the machine itself, without a login, but only after tricking someone into an action such as opening a file or a link.
FIRST's prediction model gives it a 0.4% chance of attack attempts being seen in the next 30 days, ranking above 36% of all known flaws.

What to do

1Check whether your company or your suppliers run Libarchive, and which version. The affected versions are listed further down this page.
2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

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Scoring

CVSS: 7.8 (v3.1)
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-190
Assigned by: secalert@redhat.com

Dates

Published: 2025-06-09
Last modified: 2026-09-09
Sources: NVD

Affected products

Libarchive Libarchive- 3.8.0
Redhat Openshift Container Platform4.0
Redhat Enterprise Linux6.0, 7.0, 8.0, 9.0, 10.0

As listed in the NVD configuration data. Not a statement about your estate.