CVE-2018-20250

HIGHNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-02-15), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 96%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
—
EPSS
99.9%
KEV
⚠ Exploited

Published

February 5, 2019

Last Modified

October 31, 2025

Advisory Details (8)

Auto-updated Jun 3, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Rapid7 Vulnerability Database

http://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_ace
generic

Packet Storm

http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.html
generic

Find out what's new with WinRAR

https://www.win-rar.com/whatsnew.html
generic🟡 PoC Available

RARLAB WinRAR 5.61 - ACE Format Input Validation Remote Code Execution (Metasploit) - Windows local Exploit

https://www.exploit-db.com/exploits/46756/
generic🟡 PoC Available

WinRAR 5.61 - Path Traversal - Windows local Exploit

https://www.exploit-db.com/exploits/46552/
generic

Extracting a 19 Year Old Code Execution from WinRAR - Check Point Research

https://research.checkpoint.com/extracting-code-execution-from-winrar/
generic🟡 PoC Available

GitHub - easis/CVE-2018-20250-WinRAR-ACE: Proof of concept code in C# to exploit the WinRAR ACE file extraction path (CVE-2018-20250). · GitHub

https://github.com/blau72/CVE-2018-20250-WinRAR-ACE
generic
http://www.securityfocus.com/bid/106948

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 51× in last 7d / 215× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 382 total refreshes for this CVE.

  1. 2026-07-22 22:15 UTCEG score recompute
  2. 2026-07-22 20:12 UTCGHSA enrichment
  3. 2026-07-22 19:40 UTCCISA KEV update
  4. 2026-07-22 16:17 UTCEG score recompute
  5. 2026-07-22 16:17 UTCGHSA enrichment
  6. 2026-07-22 14:05 UTCEPSS rescore
  7. 2026-07-22 12:06 UTCGHSA enrichment
  8. 2026-07-22 08:21 UTCGHSA enrichment
  9. 2026-07-22 04:35 UTCGHSA enrichment
  10. 2026-07-22 00:37 UTCGHSA enrichment
  11. 2026-07-21 19:32 UTCGHSA enrichment
  12. 2026-07-21 15:46 UTCGHSA enrichment
  13. 2026-07-21 14:37 UTCCISA KEV update
  14. 2026-07-21 12:00 UTCGHSA enrichment
  15. 2026-07-21 08:14 UTCGHSA enrichment
  16. 2026-07-21 04:28 UTCGHSA enrichment
  17. 2026-07-21 00:43 UTCGHSA enrichment
  18. 2026-07-20 20:58 UTCGHSA enrichment
  19. 2026-07-20 17:12 UTCGHSA enrichment
  20. 2026-07-20 13:27 UTCGHSA enrichment
  21. 2026-07-20 09:42 UTCGHSA enrichment
  22. 2026-07-20 05:57 UTCGHSA enrichment
  23. 2026-07-20 02:13 UTCGHSA enrichment
  24. 2026-07-19 22:28 UTCGHSA enrichment
  25. 2026-07-19 18:43 UTCGHSA enrichment
Show 75 more
  1. 2026-07-19 14:58 UTCGHSA enrichment
  2. 2026-07-19 11:13 UTCGHSA enrichment
  3. 2026-07-19 07:28 UTCGHSA enrichment
  4. 2026-07-19 03:43 UTCGHSA enrichment
  5. 2026-07-18 23:58 UTCGHSA enrichment
  6. 2026-07-18 20:11 UTCGHSA enrichment
  7. 2026-07-18 16:24 UTCGHSA enrichment
  8. 2026-07-18 12:38 UTCGHSA enrichment
  9. 2026-07-18 08:53 UTCGHSA enrichment
  10. 2026-07-18 05:07 UTCGHSA enrichment
  11. 2026-07-18 01:21 UTCGHSA enrichment
  12. 2026-07-17 21:36 UTCGHSA enrichment
  13. 2026-07-17 17:51 UTCGHSA enrichment
  14. 2026-07-17 14:07 UTCGHSA enrichment
  15. 2026-07-17 10:22 UTCEG score recompute
  16. 2026-07-17 10:22 UTCGHSA enrichment
  17. 2026-07-17 06:37 UTCGHSA enrichment
  18. 2026-07-17 02:51 UTCGHSA enrichment
  19. 2026-07-16 23:06 UTCGHSA enrichment
  20. 2026-07-16 19:21 UTCGHSA enrichment
  21. 2026-07-16 17:04 UTCCISA KEV update
  22. 2026-07-16 15:34 UTCGHSA enrichment
  23. 2026-07-16 11:48 UTCGHSA enrichment
  24. 2026-07-16 08:03 UTCGHSA enrichment
  25. 2026-07-16 04:19 UTCGHSA enrichment
  26. 2026-07-16 00:34 UTCGHSA enrichment
  27. 2026-07-15 20:48 UTCGHSA enrichment
  28. 2026-07-15 17:03 UTCGHSA enrichment
  29. 2026-07-15 16:49 UTCCISA KEV update
  30. 2026-07-15 15:04 UTCCISA KEV update
  31. 2026-07-15 13:16 UTCGHSA enrichment
  32. 2026-07-15 09:30 UTCGHSA enrichment
  33. 2026-07-15 05:44 UTCGHSA enrichment
  34. 2026-07-15 01:59 UTCGHSA enrichment
  35. 2026-07-14 22:14 UTCGHSA enrichment
  36. 2026-07-14 18:29 UTCGHSA enrichment
  37. 2026-07-14 18:05 UTCCISA KEV update
  38. 2026-07-14 14:44 UTCGHSA enrichment
  39. 2026-07-14 10:59 UTCGHSA enrichment
  40. 2026-07-14 07:11 UTCGHSA enrichment
  41. 2026-07-14 03:26 UTCGHSA enrichment
  42. 2026-07-13 23:42 UTCGHSA enrichment
  43. 2026-07-13 22:27 UTCEPSS rescore
  44. 2026-07-13 22:26 UTCEPSS rescore
  45. 2026-07-13 19:57 UTCGHSA enrichment
  46. 2026-07-13 17:07 UTCCISA KEV update
  47. 2026-07-13 16:12 UTCGHSA enrichment
  48. 2026-07-13 12:27 UTCGHSA enrichment
  49. 2026-07-13 08:42 UTCGHSA enrichment
  50. 2026-07-13 06:10 UTCEPSS rescore
  51. 2026-07-13 04:56 UTCGHSA enrichment
  52. 2026-07-13 01:11 UTCGHSA enrichment
  53. 2026-07-12 21:25 UTCGHSA enrichment
  54. 2026-07-12 17:40 UTCGHSA enrichment
  55. 2026-07-12 13:55 UTCGHSA enrichment
  56. 2026-07-12 10:11 UTCGHSA enrichment
  57. 2026-07-12 06:26 UTCGHSA enrichment
  58. 2026-07-12 02:41 UTCGHSA enrichment
  59. 2026-07-11 22:56 UTCGHSA enrichment
  60. 2026-07-11 19:11 UTCGHSA enrichment
  61. 2026-07-11 15:26 UTCGHSA enrichment
  62. 2026-07-11 11:41 UTCGHSA enrichment
  63. 2026-07-11 07:56 UTCGHSA enrichment
  64. 2026-07-11 04:11 UTCGHSA enrichment
  65. 2026-07-11 00:25 UTCGHSA enrichment
  66. 2026-07-10 20:40 UTCGHSA enrichment
  67. 2026-07-10 17:52 UTCCISA KEV update
  68. 2026-07-10 16:55 UTCGHSA enrichment
  69. 2026-07-10 13:09 UTCGHSA enrichment
  70. 2026-07-10 09:24 UTCGHSA enrichment
  71. 2026-07-10 05:38 UTCGHSA enrichment
  72. 2026-07-10 01:52 UTCGHSA enrichment
  73. 2026-07-09 22:06 UTCGHSA enrichment
  74. 2026-07-09 19:06 UTCEPSS rescore
  75. 2026-07-09 18:21 UTCGHSA enrichment

Publicly available exploits

(9 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-46756✓ verified
    First seen Apr 25, 2019

    RARLAB WinRAR 5.61 - ACE Format Input Validation Remote Code Execution (Metasploit)

    Open source ↗
  • GitHub PoCarkangel-dev/CVE-2018-20250-WINRAR-ACE-GUI
    First seen Mar 8, 2019

    CVE-2018-20250-WINRAR-ACE Exploit with a UI

    Open source ↗
  • GitHub PoCEktoplasma/ezwinrar
    First seen Mar 5, 2019

    Python tool exploiting CVE-2018-20250 found by CheckPoint folks

    Open source ↗
  • GitHub PoCSTP5940/CVE-2018-20250
    First seen Feb 28, 2019
    Open source ↗
  • GitHub PoCeasis/CVE-2018-20250-WinRAR-ACE
    First seen Feb 23, 2019

    Proof of concept code in C# to exploit the WinRAR ACE file extraction path (CVE-2018-20250).

    Open source ↗
  • Exploit-DBEDB-46552✓ verified
    First seen Feb 22, 2019

    WinRAR 5.61 - Path Traversal

    Open source ↗
  • GitHub PoCQAX-A-Team/CVE-2018-20250
    First seen Feb 22, 2019

    010 Editor template for ACE archive format & CVE-2018-2025[0-3]

    Open source ↗
  • GitHub PoCWyAtu/CVE-2018-20250
    First seen Feb 22, 2019

    exp for https://research.checkpoint.com/extracting-code-execution-from-winrar

    Open source ↗
  • Metasploitexploit/windows/fileformat/winrar_ace✓ verified
    First seen Feb 5, 2019

    RARLAB WinRAR ACE Format Input Validation Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2018-20250?
CVE-2018-20250 is a high vulnerability published on February 5, 2019. 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…
When was CVE-2018-20250 disclosed?
CVE-2018-20250 was first published in the National Vulnerability Database on February 5, 2019, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-20250 actively exploited?
Yes. CISA added CVE-2018-20250 to the Known Exploited Vulnerabilities catalog on February 15, 2022, affecting RARLAB WinRAR. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-20250?
CVE-2018-20250 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-20250?
CVE-2018-20250 affects RARLAB WinRAR. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-20250?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20250, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2018-20250

Explore →

Is Your Infrastructure Affected by CVE-2018-20250?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs