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CVE-2018-20250
In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format…
High7.8Known exploitedEPSS 96.0%
- Published
- Updated
- Reserved
- Assigned by
- checkpoint
Description
In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as WinRAR Absolute Path Traversal Vulnerability.
- Added
- 15 Feb 2022
- Fix due (US federal)
- 15 Aug 2022
- Used by ransomware
- Known
Apply updates per vendor instructions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 96.0% · top 0.1% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
Check Point Software Technologies Ltd. · WinRAR
- affected All versions prior and including 5.61
References (9)
- https://github.com/blau72/CVE-2018-20250-WinRAR-ACE (opens in a new tab)x_refsource_MISCx_transferred
- https://research.checkpoint.com/extracting-code-execution-from-winrar/ (opens in a new tab)x_refsource_MISCx_transferred
- 46552 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 106948 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://www.win-rar.com/whatsnew.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.html (opens in a new tab)x_refsource_MISCx_transferred
- http://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_ace (opens in a new tab)x_refsource_MISCx_transferred
- 46756 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20250 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-20250)Record last updated .