RARLAB WinRAR Path Traversal Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-08-12
• Known to be used in ransomware campaigns
• EPSS: 95% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

A path traversal vulnerability affecting the Windows version of WinRAR allows the attackers to execute arbitrary code by crafting malicious archive files. This vulnerability was exploited in the wild and was discovered by Anton Cherepanov, Peter Košinár, and Peter Strýček from ESET.

CISA: RARLAB WinRAR contains a path traversal vulnerability affecting the Windows version of WinRAR. This vulnerability could allow an attacker to execute arbitrary code by crafting malicious archive files.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 2 Sep 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.win-rar.com/singlenewsview.htmlRelease Notes
• arstechnica.com/security/2025/08/high-severity-winrar-0-day-exploited-for-weeks-by-2-gr…Press/Media Coverage
• support.dtsearch.com/faq/dts0245.htmThird Party Advisory
• www.vicarius.io/vsociety/posts/cve-2025-8088-detect-winrar-zero-dayThird Party Advisory
• www.vicarius.io/vsociety/posts/cve-2025-8088-mitigate-winrar-zero-day-using-srp-and-ifeoMitigationThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource
• www.welivesecurity.com/en/eset-research/update-winrar-tools-now-romcom-and-others-explo…Press/Media Coverage