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CVE-2025-27920

High CVSS 7.2 Known exploited

Published 2025-05-05 · last changed 2026-06-17 · added to CISA KEV 2025-05-19

This one is being exploited in the wild.

CISA added CVE-2025-27920 to the Known Exploited Vulnerabilities catalog on 2025-05-19. Federal agencies are required to remediate it on a deadline. If you have affected machines, this is the class of finding that moves ahead of the rest of the queue.

The fix

We hold no Microsoft remediation data for CVE-2025-27920, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Output Messenger before 2.0.63 was vulnerable to a directory traversal attack through improper file path handling. By using ../ sequences in parameters, attackers could access sensitive files outside the intended directory, potentially leading to configuration leakage or arbitrary file access.

Sources

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N