CVE-2025-27920

CRITICALNVD 7.29.8▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-05-19), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.2 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 2%CVSS: 7.2Exploit: cisa kev · ssvc activeExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.2
EG Score
9.8(high)
EG Risk
99(Attend)
EG Risk 99/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
2%
EPSS %ILE
78%
KEV
⚠ Exploited

Published

May 5, 2025

Last Modified

November 5, 2025

Advisory Details (4)

Auto-updated Jun 11, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
generic

Marbled Dust leverages zero-day in Output Messenger for regional espionage | Microsoft Security Blog

https://www.microsoft.com/en-us/security/blog/2025/05/12/marbled-dust-leverages-zero-day-in-output-messenger-for-regional-espionage/
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27920
generic

Secure Instant Lan Messenger Software - Output Messenger | Srimax

https://www.srimax.com/products-2/output-messenger/
generic

CVE-2025-27920: Directory Traversal Vulnerability

https://www.outputmessenger.com/cve-2025-27920/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 57× in last 7d / 250× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 906 total refreshes for this CVE.

  1. 2026-09-19 19:09 UTCEG score recompute
  2. 2026-09-19 19:09 UTCGHSA enrichment
  3. 2026-09-19 15:08 UTCGHSA enrichment
  4. 2026-09-19 11:07 UTCGHSA enrichment
  5. 2026-09-19 07:08 UTCGHSA enrichment
  6. 2026-09-19 03:08 UTCGHSA enrichment
  7. 2026-09-18 23:08 UTCEG score recompute
  8. 2026-09-18 23:08 UTCGHSA enrichment
  9. 2026-09-18 19:27 UTCEPSS rescore
  10. 2026-09-18 19:20 UTCCISA KEV update
  11. 2026-09-18 19:09 UTCGHSA enrichment
  12. 2026-09-18 15:09 UTCGHSA enrichment
  13. 2026-09-18 14:15 UTCCISA KEV update
  14. 2026-09-18 11:09 UTCGHSA enrichment
  15. 2026-09-18 07:10 UTCGHSA enrichment
  16. 2026-09-18 03:10 UTCGHSA enrichment
  17. 2026-09-17 23:11 UTCEG score recompute
  18. 2026-09-17 23:11 UTCGHSA enrichment
  19. 2026-09-17 19:11 UTCGHSA enrichment
  20. 2026-09-17 15:11 UTCGHSA enrichment
  21. 2026-09-17 11:11 UTCGHSA enrichment
  22. 2026-09-17 07:11 UTCGHSA enrichment
  23. 2026-09-17 03:11 UTCGHSA enrichment
  24. 2026-09-16 23:11 UTCGHSA enrichment
  25. 2026-09-16 19:11 UTCGHSA enrichment
Show 75 more
  1. 2026-09-16 15:12 UTCEG score recompute
  2. 2026-09-16 15:12 UTCGHSA enrichment
  3. 2026-09-16 14:10 UTCCISA KEV update
  4. 2026-09-16 14:07 UTCEPSS rescore
  5. 2026-09-16 11:12 UTCGHSA enrichment
  6. 2026-09-16 07:13 UTCEG score recompute
  7. 2026-09-16 07:13 UTCGHSA enrichment
  8. 2026-09-16 05:13 UTCEPSS rescore
  9. 2026-09-16 03:13 UTCGHSA enrichment
  10. 2026-09-15 23:13 UTCGHSA enrichment
  11. 2026-09-15 19:13 UTCGHSA enrichment
  12. 2026-09-15 15:13 UTCGHSA enrichment
  13. 2026-09-15 11:13 UTCGHSA enrichment
  14. 2026-09-15 07:13 UTCGHSA enrichment
  15. 2026-09-15 03:13 UTCEG score recompute
  16. 2026-09-15 03:13 UTCGHSA enrichment
  17. 2026-09-14 23:13 UTCGHSA enrichment
  18. 2026-09-14 19:24 UTCCISA KEV update
  19. 2026-09-14 19:13 UTCGHSA enrichment
  20. 2026-09-14 15:13 UTCGHSA enrichment
  21. 2026-09-14 11:14 UTCGHSA enrichment
  22. 2026-09-14 07:14 UTCGHSA enrichment
  23. 2026-09-14 03:14 UTCGHSA enrichment
  24. 2026-09-13 23:14 UTCGHSA enrichment
  25. 2026-09-13 19:15 UTCEG score recompute
  26. 2026-09-13 19:15 UTCGHSA enrichment
  27. 2026-09-13 16:46 UTCEPSS rescore
  28. 2026-09-13 15:14 UTCGHSA enrichment
  29. 2026-09-13 11:14 UTCGHSA enrichment
  30. 2026-09-13 07:14 UTCGHSA enrichment
  31. 2026-09-13 03:14 UTCGHSA enrichment
  32. 2026-09-12 23:15 UTCGHSA enrichment
  33. 2026-09-12 19:15 UTCGHSA enrichment
  34. 2026-09-12 15:15 UTCEG score recompute
  35. 2026-09-12 15:15 UTCGHSA enrichment
  36. 2026-09-12 15:00 UTCEPSS rescore
  37. 2026-09-12 11:16 UTCGHSA enrichment
  38. 2026-09-12 07:16 UTCGHSA enrichment
  39. 2026-09-12 03:16 UTCGHSA enrichment
  40. 2026-09-11 23:16 UTCGHSA enrichment
  41. 2026-09-11 19:16 UTCGHSA enrichment
  42. 2026-09-11 18:49 UTCCISA KEV update
  43. 2026-09-11 15:16 UTCEG score recompute
  44. 2026-09-11 15:16 UTCGHSA enrichment
  45. 2026-09-11 14:52 UTCEPSS rescore
  46. 2026-09-11 11:16 UTCEG score recompute
  47. 2026-09-11 11:16 UTCGHSA enrichment
  48. 2026-09-11 09:35 UTCEPSS rescore
  49. 2026-09-11 07:15 UTCGHSA enrichment
  50. 2026-09-11 03:15 UTCGHSA enrichment
  51. 2026-09-10 23:15 UTCGHSA enrichment
  52. 2026-09-10 19:28 UTCCISA KEV update
  53. 2026-09-10 19:15 UTCGHSA enrichment
  54. 2026-09-10 15:16 UTCGHSA enrichment
  55. 2026-09-10 11:16 UTCEG score recompute
  56. 2026-09-10 11:16 UTCGHSA enrichment
  57. 2026-09-10 09:33 UTCEPSS rescore
  58. 2026-09-10 07:14 UTCGHSA enrichment
  59. 2026-09-10 03:14 UTCGHSA enrichment
  60. 2026-09-09 23:14 UTCGHSA enrichment
  61. 2026-09-09 19:13 UTCGHSA enrichment
  62. 2026-09-09 19:08 UTCCISA KEV update
  63. 2026-09-09 15:13 UTCGHSA enrichment
  64. 2026-09-09 11:13 UTCGHSA enrichment
  65. 2026-09-09 07:14 UTCGHSA enrichment
  66. 2026-09-09 03:14 UTCGHSA enrichment
  67. 2026-09-08 23:14 UTCEG score recompute
  68. 2026-09-08 23:14 UTCGHSA enrichment
  69. 2026-09-08 21:59 UTCEPSS rescore
  70. 2026-09-08 19:14 UTCGHSA enrichment
  71. 2026-09-08 18:54 UTCCISA KEV update
  72. 2026-09-08 15:11 UTCGHSA enrichment
  73. 2026-09-08 11:10 UTCGHSA enrichment
  74. 2026-09-08 07:09 UTCGHSA enrichment
  75. 2026-09-08 03:10 UTCGHSA enrichment

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Frequently asked(6)

What is CVE-2025-27920?
CVE-2025-27920 is a critical vulnerability published on May 5, 2025. 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.
When was CVE-2025-27920 disclosed?
CVE-2025-27920 was first published in the National Vulnerability Database on May 5, 2025, with the most recent update on November 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-27920 actively exploited?
Yes. CISA added CVE-2025-27920 to the Known Exploited Vulnerabilities catalog on May 19, 2025, affecting Srimax Output Messenger. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-27920?
CVE-2025-27920 has a CVSS v3 base score of 7.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
Which products are affected by CVE-2025-27920?
CVE-2025-27920 affects Srimax Output Messenger. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2025-27920?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-27920, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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