What’s Vulnerable › Vulnerabilities

CVE-2025-27920: Srimax Output Messenger Directory Traversal Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2025-05-19
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-05 · updated 2026-06-17
• Weakness: CWE-24

Description

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.

Affected products

• Srimax Output Messenger: before 2.0.63 — fixed in 2.0.63

How to fix

Upgrade to a fixed version: Srimax Output Messenger 2.0.63. Check the vendor advisory for mitigations.

References

• https://www.outputmessenger.com/cve-2025-27920/
• https://www.srimax.com/products-2/output-messenger/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27920
• https://www.microsoft.com/en-us/security/blog/2025/05/12/marbled-dust-leverages-zero-day-in-output-messenger-for-regional-espionage/

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