Security readout for executives and security teams
Older WinRAR installations can be tricked by a malicious ACE archive into writing files outside the chosen extraction folder. A user must open or extract the archive, but successful abuse can place attacker-controlled files in sensitive locations and lead to code execution. Exposure is most likely on Windows endpoints, jump boxes, or shared workstations running WinRAR 5.61 or older, especially where users receive and extract archives from email, downloads, ticket attachments, or file shares. Treat this as a priority legacy-software cleanup issue. It has known exploitation, public exploit references, and a simple user-assisted attack path. Replace or update vulnerable WinRAR installations before relying on awareness training alone. Mitigation focus: Upgrade WinRAR to a version newer than 5.61 using vendor guidance.; Remove or retire legacy ACE extraction support where vendor guidance supports it.; Prioritize endpoints that process untrusted archives from email, web, or file shares..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupFile access behavior lookup
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Open ATT&CK lookupCVE-2018-20250 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/blau72/CVE-2018-20250-WinRAR-ACECVE reference · x_refsource_MISC
- https://research.checkpoint.com/extracting-code-execution-from-winrar/CVE reference · x_refsource_MISC
- 46552CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://www.win-rar.com/whatsnew.htmlCVE reference · x_refsource_MISC
- 46756CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20250CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE mapping pending import
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