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: NoneExposed: 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
87%
KEV
⚠ Exploited

Published

April 18, 2025

Last Modified

October 24, 2025

Advisory Details (2)

Auto-updated Jun 1, 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

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 42× in last 7d / 229× 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 441 total refreshes for this CVE.

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

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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.

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