#VU111537 Path traversal in WinRAR - CVE-2025-6218

Vulnerability identifier: #VU111537

Vulnerability risk: High

CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2025-6218

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
WinRAR
Client/Desktop applications / Software for archiving

Vendor: RARLAB

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the handling of file paths within archive files. A remote attacker can trick a victim to open a specially crafted archive and write files to arbitrary directories on the system, leading to arbitrary code execution.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WinRAR: 7.00 beta 1 - 7.10

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External links
https://www.zerodayinitiative.com/advisories/ZDI-25-409/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.