WinRAR Path Traversal Vulnerability CVE-2025-6218

Historical catalog analysis: CISA added this entry on December 09, 2025. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.

What the vulnerability is

CVE-2025-6218 is a path traversal vulnerability (CWE-22) identified in RARLAB WinRAR. This flaw allows an attacker to execute arbitrary code with the privileges of the user currently running the application.

Exposure and applicability

This vulnerability affects systems where WinRAR is installed and used to process archives from untrusted sources. Because the exploit executes code in the context of the current user, the level of risk depends on the permissions assigned to that user account; however, any successful execution provides a foothold for further activity within the user’s session.

Remediation priorities

Based on our analysis, vulnerability management teams should prioritize the following actions:

1. Asset Identification: Identify all endpoints where WinRAR is deployed. This includes both authorized installations and unauthorized “shadow IT” copies of the utility.
2. Vendor Mitigation: Apply the updates or mitigations provided by RARLAB. Organizations should refer to official vendor communications to determine which specific versions are affected and which update resolves the flaw.
3. Alternative Tooling: In environments where immediate patching is not feasible or where vendor mitigations cannot be verified, consider discontinuing the use of WinRAR in favor of supported alternatives.
4. Cloud Service Review: For organizations utilizing cloud-based file processing services that may incorporate WinRAR, review configurations against BOD 22-01 guidance to ensure exposure is minimized.

How to validate remediation

Verification must go beyond a simple version check, as the presence of a new version does not always guarantee successful deployment across all user profiles. We recommend the following validation steps:

• Binary Verification: Confirm that the executable files on disk match the hashes or versions specified in the vendor’s security update.
• Configuration Audit: Ensure that no legacy, vulnerable versions of WinRAR remain in temporary directories or user-profile folders where they might be executed instead of the patched system-wide installation.

Limits and open questions

It remains unknown whether this vulnerability has been utilized by ransomware campaigns. Additionally, while vendor mitigations are available, there is residual risk if users continue to process archives from untrusted sources using unpatched versions of the software. Defenders should note that applying a patch reduces the likelihood of exploitation but does not eliminate the inherent risk associated with processing untrusted archive files.

Source and editorial note

CVE-2025-6218: RARLAB WinRAR Path Traversal Vulnerability · Source date: December 09, 2025 · Retrieved August 31, 2026.

Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.

Archive date: December 12, 2025. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: September 26, 2026 at 01:40 UTC.

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