CVE-2025-8088: win.rar WinRAR · Path Traversal
Affects win.rar WinRARSource CVE Database V5
Exploited in the wild · used in ransomware campaigns · KEV due 2 Sep 2025 · 94% EPSS : apply the vendor's fix or mitigations to win.rar WinRAR now.
Data as of 6 Nov 2026, 23:24 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
- Ransomware
- Used in ransomware campaigns
- EPSS
- 94.0% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 8 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 4 days after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by ESET, spol. s r.o.
, 16 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 21 minutes after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed · ransomware use known
, 4 days after disclosure
KEV remediation due
US federal deadline
, 25 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| win.rar GmbH WinRAR | Affected
| Fixed in– |
Description
CVE-2025-8088 is a path traversal vulnerability in the Windows version of WinRAR that allows attackers to execute arbitrary code via crafted malicious archive files. It has been exploited in the wild and is associated with known ransomware campaigns. The vulnerability was discovered by researchers from ESET and carries a high severity rating with a CVSS 4.0 score of 8.4.
Reports on CVE-2025-8088
References
- win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=283&cHash=a64b4a8f662d3639dec8d65f47bc93c5 (opens in a new tab)
- welivesecurity.com/en/eset-research/update-winrar-tools-now-romcom-and-others-exploiting-zero-day-vulnerability/ (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-8088 (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-8088-detect-winrar-zero-day (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-8088-mitigate-winrar-zero-day-using-srp-and-ifeo (opens in a new tab)
- support.dtsearch.com/faq/dts0245.htm (opens in a new tab)
- arstechnica.com/security/2025/08/high-severity-winrar-0-day-exploited-for-weeks-by-2-groups/ (opens in a new tab)