CVEs / CVE-2025-27920
CVE-2025-27920: Srimax Output Messenger Directory Traversal Vulnerability
- Known exploited in the CISA KEV catalog since 19 May 2025
- high 8.8 CVSS 3.1 (NVD)
- EPSS 1.86% chance of exploitation in the next 30 days, higher than 79% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Srimax Output Messenger contains a directory traversal vulnerability that allows an attacker to access sensitive files outside the intended directory, potentially leading to configuration leakage or arbitrary file access.
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 and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Srimax Output Messenger | before 2.0.63 | 2.0.63 |
Exploitation
| In CISA KEV since | 19 May 2025 |
|---|---|
| Due date for US federal agencies | 9 Jun 2025 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-24 |
References
- CVE-2025-27920 on NVD
- CVE-2025-27920 in the CISA KEV catalog
- https://www.outputmessenger.com/cve-2025-27920/ (cited by CISA)
- 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-2025-27920 US 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
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.