CVE-2023-38831

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 2023-08-24), 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: 98%CVSS: 7.8Exploit: NoneExposed: 0

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

RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.

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

Published

August 23, 2023

Last Modified

October 31, 2025

Advisory Details (4)

Auto-updated Jun 4, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

CVE-2023-38831 zero-Day vulnerability in WinRAR | Group-IB Blog

https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/
generic🔴 Active Exploitation

WinRAR zero-day exploited since April to hack trading accounts

https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/
generic🟡 PoC Available

Government-backed actors exploiting WinRAR vulnerability

https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/
generic

Packet Storm

http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 46× in last 7d / 190× 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 349 total refreshes for this CVE.

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

Publicly available exploits

(10 references)

Working exploit code is in the public domain (10 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCxaitax/WinRAR-CVE-2023-38831
    First seen Sep 3, 2023

    This module exploits a vulnerability in WinRAR (CVE-2023-38831). When a user opens a crafted RAR file and its embedded document, a script is executed, leading to code execution.

    Open source ↗
  • GitHub PoCMorDavid/CVE-2023-38831-Winrar-Exploit-Generator-POC
    First seen Aug 30, 2023

    This is a POC for the CVE-2023-3883 exploit targeting WinRAR up to 6.22. Modified some existing internet-sourced POCs by introducing greater dynamism and incorporated additional try-except blocks within the code.

    Open source ↗
  • GitHub PoCHDCE-inc/CVE-2023-38831
    First seen Aug 28, 2023

    CVE-2023-38831 PoC (Proof Of Concept)

    Open source ↗
  • GitHub PoCknight0x07/WinRAR-Code-Execution-Vulnerability-CVE-2023-38831
    First seen Aug 28, 2023

    Understanding WinRAR Code Execution Vulnerability (CVE-2023-38831)

    Open source ↗
  • GitHub PoCMaalfer/CVE-2023-38831_ReverseShell_Winrar-RCE
    First seen Aug 28, 2023

    Pasos necesarios para obtener una reverse shell explotando la vulnerabilidad de winrar CVE-2023-38831 en versiones anteriores a 6.23.

    Open source ↗
  • GitHub PoCahmed-fa7im/CVE-2023-38831-winrar-expoit-simple-Poc
    First seen Aug 28, 2023

    CVE-2023-38831 winrar exploit generator and get reverse shell

    Open source ↗
  • GitHub PoCGarck3h/cve-2023-38831
    First seen Aug 27, 2023

    一款用于生成winrar程序RCE（即cve-2023-38831）的POC的工具。

    Open source ↗
  • GitHub PoCignis-sec/CVE-2023-38831-RaRCE
    First seen Aug 27, 2023

    An easy to install and easy to run tool for generating exploit payloads for CVE-2023-38831, WinRAR RCE before versions 6.23

    Open source ↗
  • GitHub PoCb1tg/CVE-2023-38831-winrar-exploit
    First seen Aug 25, 2023

    CVE-2023-38831 winrar exploit generator

    Open source ↗
  • GitHub PoCBoredHackerBlog/winrar_CVE-2023-38831_lazy_poc
    First seen Aug 24, 2023

    lazy way to create CVE-2023-38831 winrar file for testing

    Open source ↗

Frequently asked(6)

What is CVE-2023-38831?
CVE-2023-38831 is a high vulnerability published on August 23, 2023. RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the…
When was CVE-2023-38831 disclosed?
CVE-2023-38831 was first published in the National Vulnerability Database on August 23, 2023, 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-2023-38831 actively exploited?
Yes. CISA added CVE-2023-38831 to the Known Exploited Vulnerabilities catalog on August 24, 2023, affecting RARLAB WinRAR. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-38831?
CVE-2023-38831 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-2023-38831?
CVE-2023-38831 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-2023-38831?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-38831, 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

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