CVE-2018-20250
WinRAR Absolute Path Traversal Vulnerability
- High 7.8
- Exploited: added to CISA KEV 15 Feb 2022
- Used in ransomware campaigns
- A public exploit reference is listed
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.
Key facts
- Published
- 5 Feb 2019
- Last changed
- 13 Aug 2026
- Assigned by
- checkpoint
- KEV added
- 15 Feb 2022
- KEV fix due
- 15 Aug 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 96.004% likely to be exploited in the next 30 days, higher than 99.878% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Check Point Software Technologies Ltd. | WinRAR |
|
Timeline
- 5 Feb 2019 Published
- 15 Feb 2022 CVE-2018-20250 added to CISA KEV
- 15 Feb 2022 Added to the CISA KEV catalogue