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Varaxon Technologies

Known exploited vulnerability · CISA KEV

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

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.

CVE-2025-27920

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2025-05-19: attackers are using it right now.

CISA KEV
Listed
Added 2025-05-19 · federal fix-by 2025-06-09
EPSS (30 days)
1.9%
Higher than 79% of CVEs · 2026-11-01
CVSS
No score

What CISA says

Srimax Output Messenger Directory Traversal Vulnerability

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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How to check if you are exposed to CVE-2025-27920

  1. Find every Srimax Output Messenger system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
  2. Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
  3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2025-27920.

US federal agencies had to fix this by 2025-06-09. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Timeline

  1. · Added to CISA's Known Exploited Vulnerabilities catalog
  2. · Fix-by date for US federal agencies, passed 510 days ago

Vendor advisories and fixes

Weakness type

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

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