CVE-2024-6863

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2025-03-20. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacker to encrypt arbitrary files with keys of their choice, making it exceedingly difficult for the target to recover the keys needed for decryption.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
—
EPSS
25.3%
KEV
Not listed

Published

March 20, 2025

Last Modified

July 15, 2025

References (1)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
mavenai.h2o:h2o-core—ghsa
piph2o—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Maven(1)
PackageVulnerable rangeFixed inDependents
ai.h2o:h2o-core3.32.1.2 ... 3.44.0.3 (38 versions)——
PyPI(1)
PackageVulnerable rangeFixed inDependents
h2o3.32.1.2 ... 3.44.0.3 (32 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 41× 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.

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

Frequently asked(5)

What is CVE-2024-6863?
CVE-2024-6863 is a medium vulnerability published on March 20, 2025. In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacker…
When was CVE-2024-6863 disclosed?
CVE-2024-6863 was first published in the National Vulnerability Database on March 20, 2025, with the most recent update on July 15, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-6863 actively exploited?
CVE-2024-6863 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-6863?
CVE-2024-6863 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2024-6863?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-6863, 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

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