CVE-2025-42599

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-04-28), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 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: 3%CVSS: 9.8Exploit: cisa kev · ssvc activeExposed: 0

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

Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request created and sent by a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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: Fix now — active exploitation, automatable, high impact.
EPSS PROB
3%
EPSS %ILE
88%
KEV
⚠ Exploited

Published

April 18, 2025

Last Modified

October 24, 2025

Advisory Details (3)

Auto-updated Sep 17, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
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-2025-42599
generic

【更新】Active! mail 6の脆弱性に関する重要なお知らせ | ニュース・イベント | 株式会社クオリティア

https://www.qualitia.com/jp/news/2025/04/18_1030.html
generic

JVN#22348866: Active! mail vulnerable to stack-based buffer overflow

https://jvn.jp/en/jp/JVN22348866/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 57× in last 7d / 245× 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 913 total refreshes for this CVE.

  1. 2026-09-22 10:47 UTCGHSA enrichment
  2. 2026-09-22 06:44 UTCGHSA enrichment
  3. 2026-09-22 02:41 UTCGHSA enrichment
  4. 2026-09-21 22:37 UTCEG score recompute
  5. 2026-09-21 22:37 UTCGHSA enrichment
  6. 2026-09-21 19:09 UTCCISA KEV update
  7. 2026-09-21 18:34 UTCGHSA enrichment
  8. 2026-09-21 14:31 UTCGHSA enrichment
  9. 2026-09-21 10:28 UTCGHSA enrichment
  10. 2026-09-21 06:25 UTCGHSA enrichment
  11. 2026-09-21 02:22 UTCGHSA enrichment
  12. 2026-09-20 22:19 UTCEG score recompute
  13. 2026-09-20 22:18 UTCGHSA enrichment
  14. 2026-09-20 20:15 UTCEPSS rescore
  15. 2026-09-20 18:15 UTCGHSA enrichment
  16. 2026-09-20 14:12 UTCGHSA enrichment
  17. 2026-09-20 10:09 UTCGHSA enrichment
  18. 2026-09-20 06:06 UTCGHSA enrichment
  19. 2026-09-20 02:03 UTCGHSA enrichment
  20. 2026-09-19 22:00 UTCGHSA enrichment
  21. 2026-09-19 17:56 UTCEG score recompute
  22. 2026-09-19 17:56 UTCGHSA enrichment
  23. 2026-09-19 13:52 UTCGHSA enrichment
  24. 2026-09-19 09:48 UTCGHSA enrichment
  25. 2026-09-19 05:45 UTCGHSA enrichment
Show 75 more
  1. 2026-09-19 01:42 UTCGHSA enrichment
  2. 2026-09-18 21:39 UTCEG score recompute
  3. 2026-09-18 21:39 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 19:20 UTCCISA KEV update
  6. 2026-09-18 17:36 UTCGHSA enrichment
  7. 2026-09-18 14:15 UTCCISA KEV update
  8. 2026-09-18 13:33 UTCGHSA enrichment
  9. 2026-09-18 09:29 UTCGHSA enrichment
  10. 2026-09-18 05:26 UTCGHSA enrichment
  11. 2026-09-18 01:23 UTCGHSA enrichment
  12. 2026-09-17 21:20 UTCEG score recompute
  13. 2026-09-17 21:20 UTCGHSA enrichment
  14. 2026-09-17 19:29 UTCEPSS rescore
  15. 2026-09-17 17:16 UTCGHSA enrichment
  16. 2026-09-17 13:10 UTCGHSA enrichment
  17. 2026-09-17 09:07 UTCGHSA enrichment
  18. 2026-09-17 05:04 UTCGHSA enrichment
  19. 2026-09-17 01:01 UTCGHSA enrichment
  20. 2026-09-16 20:57 UTCGHSA enrichment
  21. 2026-09-16 16:53 UTCEG score recompute
  22. 2026-09-16 16:53 UTCGHSA enrichment
  23. 2026-09-16 14:10 UTCCISA KEV update
  24. 2026-09-16 14:07 UTCEPSS rescore
  25. 2026-09-16 12:49 UTCGHSA enrichment
  26. 2026-09-16 08:46 UTCEG score recompute
  27. 2026-09-16 08:46 UTCGHSA enrichment
  28. 2026-09-16 05:14 UTCEPSS rescore
  29. 2026-09-16 04:43 UTCGHSA enrichment
  30. 2026-09-16 00:39 UTCGHSA enrichment
  31. 2026-09-15 20:35 UTCGHSA enrichment
  32. 2026-09-15 16:26 UTCGHSA enrichment
  33. 2026-09-15 12:22 UTCGHSA enrichment
  34. 2026-09-15 08:18 UTCGHSA enrichment
  35. 2026-09-15 04:15 UTCEG score recompute
  36. 2026-09-15 04:15 UTCGHSA enrichment
  37. 2026-09-15 00:12 UTCGHSA enrichment
  38. 2026-09-14 20:09 UTCGHSA enrichment
  39. 2026-09-14 19:24 UTCCISA KEV update
  40. 2026-09-14 16:06 UTCGHSA enrichment
  41. 2026-09-14 12:03 UTCGHSA enrichment
  42. 2026-09-14 07:59 UTCGHSA enrichment
  43. 2026-09-14 03:56 UTCGHSA enrichment
  44. 2026-09-13 23:53 UTCGHSA enrichment
  45. 2026-09-13 19:50 UTCEG score recompute
  46. 2026-09-13 19:50 UTCGHSA enrichment
  47. 2026-09-13 16:46 UTCEPSS rescore
  48. 2026-09-13 15:47 UTCGHSA enrichment
  49. 2026-09-13 11:43 UTCGHSA enrichment
  50. 2026-09-13 07:39 UTCGHSA enrichment
  51. 2026-09-13 03:36 UTCGHSA enrichment
  52. 2026-09-12 23:34 UTCGHSA enrichment
  53. 2026-09-12 19:31 UTCGHSA enrichment
  54. 2026-09-12 15:28 UTCEG score recompute
  55. 2026-09-12 15:28 UTCGHSA enrichment
  56. 2026-09-12 15:00 UTCEPSS rescore
  57. 2026-09-12 11:25 UTCGHSA enrichment
  58. 2026-09-12 07:22 UTCGHSA enrichment
  59. 2026-09-12 03:19 UTCGHSA enrichment
  60. 2026-09-11 23:15 UTCGHSA enrichment
  61. 2026-09-11 19:11 UTCGHSA enrichment
  62. 2026-09-11 18:49 UTCCISA KEV update
  63. 2026-09-11 15:08 UTCEG score recompute
  64. 2026-09-11 15:08 UTCGHSA enrichment
  65. 2026-09-11 14:52 UTCEPSS rescore
  66. 2026-09-11 11:05 UTCEG score recompute
  67. 2026-09-11 11:05 UTCGHSA enrichment
  68. 2026-09-11 09:35 UTCEPSS rescore
  69. 2026-09-11 07:02 UTCGHSA enrichment
  70. 2026-09-11 02:59 UTCGHSA enrichment
  71. 2026-09-10 22:56 UTCGHSA enrichment
  72. 2026-09-10 19:28 UTCCISA KEV update
  73. 2026-09-10 18:52 UTCGHSA enrichment
  74. 2026-09-10 14:48 UTCGHSA enrichment
  75. 2026-09-10 10:44 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2025-42599?
CVE-2025-42599 is a critical vulnerability published on April 18, 2025. Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request created and sent by a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition.
When was CVE-2025-42599 disclosed?
CVE-2025-42599 was first published in the National Vulnerability Database on April 18, 2025, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-42599 actively exploited?
Yes. CISA added CVE-2025-42599 to the Known Exploited Vulnerabilities catalog on April 28, 2025, affecting Qualitia Active! Mail. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-42599?
CVE-2025-42599 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2025-42599?
CVE-2025-42599 affects Qualitia Active! Mail. 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-2025-42599?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-42599, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-42599

Explore →

Is Your Infrastructure Affected by CVE-2025-42599?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs