CISA KEV · Known exploitedHigh

CVE-2025-27920

Srimax Output Messenger

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.

CVSS
8.8
EPSS
1.77%
76.0% percentile
CISA KEV
Listed
Published
2025.05.06
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability1.77%
Technical severityCVSS 8.8

Vulnerability overview

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 product and versions

Product
Srimax Output Messenger
Affected versions
< 2.0.63
Fixed versions
2.0.63

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA 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.

Due date: 2025.06.09
  1. 1
    Identify

    Confirm that Srimax Output Messenger and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-22, CWE-24
KEV added
2025.05.19
Ransomware use
미확인
CVE-2025-27920 — Srimax Output Messenger | SECUFOCUS NOW