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ExploitedIn CISA KEV

CVE-2018-20250

Exploitation confirmed. First attested on 2022-02-15 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2019-02-05
  • WeaknessCWE-22 · CWE-36

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2019-02-0520:29CVE publishedNVD
  2. 2019-02-22Exploit-DB entryExploit-DB
  3. 2022-02-15Added to the CISA KEV catalogCISA KEV
  4. 2022-02-15Listed as exploited by GCVEGCVE
  5. 2022-02-15Exploitation first reportedCISA KEV
  6. 2025-02-0713:40SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-20250?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-20250?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Rarlab winrar
BranchAffectedFixed in
5.61≤ 5.61no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As checkpoint, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Check Point Software Technologies Ltd. WinRAR
    Affected
    • = All versions prior and including 5.61no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2019-04-25

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-08-15

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-46552EDB-46756
Exploit-DB
Proof-of-concept repositories
19 repositories, unverifiedWyAtu/CVE-2018-20250QAX-A-Team/CVE-2018-20250nmweizi/CVE-2018-20250-poc-winrarblunden/UNACEV2.DLL-CVE-2018-20250easis/CVE-2018-20250-WinRAR-ACE
PoC-in-GitHub
Metasploit modules
1 moduleexploit/windows/fileformat/winrar_acerank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-02-15
Patch Due Date
2022-08-15
Ransomware Use
Known
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2019-02-05
Last Modified
2026-08-13
NVD status
Analyzed
GitHub Advisory
GHSA-7v9q-j964-43qc

Frequently asked questions

What is 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 (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.

Is CVE-2018-20250 actively exploited?

Yes. CVE-2018-20250 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-08-15.

What is the CVSS score for CVE-2018-20250?

CVE-2018-20250 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record