CVE-2023-38831
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.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Aug 24, 2023
- US federal agencies must remediate it by Sep 14, 2023 (BOD 22-01)
- Attacked 45 days before the vulnerability was made public
- Used in ransomware campaigns
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Source: CISA KEV · Sep 22, 2026 Aug 26, 2026 May 14, 2026 May 7, 2026 Mar 23, 2026 Mar 13, 2026
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| rarlab | winrar | < 6.23 |
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This product uses the NVD API but is not endorsed or certified by the NVD.