Home/CVE/RARLAB WinRAR Path Traversal Vulnerability
CVE

CVE-2025-8088

RARLAB WinRAR Path Traversal Vulnerability

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.

HIGH · CVSS 8.8 ⚠ CISA KEV EPSS 0.08336
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules11 YARA rules1
⬢

Required Remediation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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Threat Actors Linked

1
actorRomCom
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Weakness Classification

CWE-35Path Traversal: '.../...//'
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Affected Products & Versions

2
rarlab winrar< 7.13
dtsearch< 2023.01
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Detection Rules (IDS/IPS)

2
et-openET EXPLOIT [CORELIGHT] RAR File ADS Path Traversal Inbound via HTTP (CVE-2025-8088)bad-unknown
et-openET EXPLOIT [CORELIGHT] RAR File ADS Path Traversal Inbound via raw tcp (CVE-2025-8088)bad-unknown
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
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Sigma Hunt Rules

11
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
exacthighWinRAR Creating Files in Startup Locations
productmediumWinRAR Execution in Non-Standard Folder
productmediumPotentially Suspicious Child Process Of WinRAR.EXE
productmediumWinrar Compressing Dump Files
productcriticalHackTool - Windows Credential Editor (WCE) Execution
productcriticalWindows Credential Editor Registry
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Scoring & Timeline

8.8
HIGH · CVSS v3.1 · security@eset.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Aug 2025 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2025-8088
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://arstechnica.com/security/2025/08/high-severity-winrar-0-day-exploited-for-weeks-by-2-groups/Press/Media Coverage
https://support.dtsearch.com/faq/dts0245.htmThird Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-8088-detect-winrar-zero-dayThird Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-8088-mitigate-winrar-zero-day-using-srp-and-ifeoMitigationThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-8088US Government Resource
https://www.welivesecurity.com/en/eset-research/update-winrar-tools-now-romcom-and-others-exploiting-zero-day-vulnerability/#the-discovery-of-cve-2025-8088Press/Media Coverage
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