CVE-2025-27920

Name: CVE-2025-27920
Creator: NVD / NIST
Published: 2025-05-05T16:15:50.857+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 1.81%

Last modified Jun 17, 2026

CVE-2025-27920 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 1.81% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.81%

75.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 9, 2025.

Weakness Enumeration

CWE-24

Affected Software

Vendor	Product	Versions
Srimax	Output Messenger	< 2.0.63

References

https://www.outputmessenger.com/cve-2025-27920/Vendor Advisory
https://www.srimax.com/products-2/output-messenger/Product
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27920US Government Resource
https://www.microsoft.com/en-us/security/blog/2025/05/12/marbled-dust-leverages-zero-day-in-output-messenger-for-regional-espionage/Mitigation, Third Party Advisory

Timeline

Published: May 5, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-27920?

How severe is CVE-2025-27920?

CVE-2025-27920 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.81% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-27920?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-27920?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST