CVE-2023-38831 (GCVE-0-2023-38831)

Vulnerability from cvelistv5 – Published: 2023-08-23 00:00 – Updated: 2025-10-21 23:05
VLAI? CISA KEV
Summary
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.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5c6cb711-6e2c-4c94-beaa-e9aaf24c4a39

Vulnerability ID: CVE-2023-38831

Status: Confirmed

Status Updated: 2023-08-24 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-08-24
Asserted: 2023-08-24
Scope
Notes: KEV entry: RARLAB WinRAR Code Execution Vulnerability | Affected: RARLAB / WinRAR | Description: RARLAB WinRAR contains an unspecified vulnerability that allows an attacker to execute code when a user attempts to view a benign file within a ZIP archive. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2023-09-14 | Known ransomware campaign use (KEV): Known | Notes (KEV): http://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa; https://nvd.nist.gov/vuln/detail/CVE-2023-38831
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-351
Feed CISA Known Exploited Vulnerabilities Catalog
Product WinRAR
Due Date 2023-09-14
Date Added 2023-08-24
Vendorproject RARLAB
Vulnerabilityname RARLAB WinRAR Code Execution Vulnerability
Knownransomwarecampaignuse Known
References
Created: 2026-02-02 12:26 UTC | Updated: 2026-02-02 12:26 UTC
Show details on NVD website
To clipboard 

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}


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Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.