CVE-2025-27920
HighExploitedPublic exploitOutput Messenger before 2.0.63 was vulnerable to a directory traversal attack through improper file path handling.
Published May 5, 2025 · Updated Nov 5, 2025
Key Facts
Patch immediately- CVE-2025-27920 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Output Messenger (Srimax).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 12, 2025. Public exploit code is available.
- EPSS estimates a 1.9% probability of exploitation in the next 30 days.
- Fixed versions are available, including Output Messenger 2.0.63.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
1.9%
Higher than 78.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-27920 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | May 19, 2025 | Jun 9, 2025 | Not reported |
| Industry KEV feed | May 12, 2025 | Jun 9, 2025 | Not reported |
| CIRCL KEV | May 19, 2025 | Jun 9, 2025 | Not reported |
| ENISA EUVD | May 19, 2025 | n/a | Not reported |
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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Output MessengerSrimax | See advisory | 2.0.63 |
Patched Releases
Output Messenger
2.0.63
Timeline
Publicly disclosed
May 5, 2025
Added to Industry KEV feed
May 12, 2025
Added to CISA KEV
May 19, 2025
Added to CIRCL KEV
May 19, 2025
Added to ENISA EUVD
May 19, 2025
Last updated
Nov 5, 2025
Weakness Type
- CWE-24 Path Traversal: '../filedir'
References
- advisoryVulnCheck exploitation report
- advisoryhttps://www.outputmessenger.com/cve-2025-27920/
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Output Messenger before 2.0.63 was vulnerable to a directory traversal attack through improper file path handling.
Affected: Output Messenger (Srimax). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 12, 2025.
Yes. It was added on May 19, 2025 with a federal remediation due date of Jun 9, 2025.
Public exploit code is available.
Fixed versions are available, including Output Messenger 2.0.63.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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