CVE-2026-59651

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-03. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100CISA SSVC

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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 3, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Aug 3, 2026
Patch available. Sources: github_commit.
github_commit

commit faf5daa6e9b8 (bcgit/bc-java)

Fix landed in bcgit/bc-java commit faf5daa6e9b8 — awaiting tagged release

https://github.com/bcgit/bc-java/commit/faf5daa6e9b8460f862afc0af1cc0da365f7d4d2
generic

Home · bcgit/bc-java Wiki · GitHub

https://github.com/bcgit/bc-java/wiki/CVE-2026-59651

Vendor Advisories for CVE-2026-59651(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.68-2 ... 1.80-3 (12 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.72-2 ... 1.86-1 (6 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.80-3, 1.86-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.80-3
  • every version up to 1.86-1: fixed in 1.86-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 86× 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 210 total refreshes for this CVE.

  1. 2026-10-04 23:47 UTCEG score recompute
  2. 2026-10-04 23:47 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 06:23 UTCEG score recompute
  5. 2026-10-04 06:23 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-03 02:40 UTCEG score recompute
  8. 2026-10-03 02:40 UTCGHSA enrichment
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-02 10:26 UTCEG score recompute
  11. 2026-10-02 10:26 UTCGHSA enrichment
  12. 2026-10-01 19:50 UTCEPSS rescore
  13. 2026-10-01 15:41 UTCGHSA enrichment
  14. 2026-10-01 02:40 UTCEG score recompute
  15. 2026-10-01 02:40 UTCGHSA enrichment
  16. 2026-09-30 15:03 UTCEPSS rescore
  17. 2026-09-29 15:22 UTCEPSS rescore
  18. 2026-09-29 06:45 UTCEG score recompute
  19. 2026-09-29 06:45 UTCGHSA enrichment
  20. 2026-09-28 13:51 UTCEPSS rescore
  21. 2026-09-28 07:19 UTCGHSA enrichment
  22. 2026-09-27 18:19 UTCEG score recompute
  23. 2026-09-27 18:19 UTCGHSA enrichment
  24. 2026-09-27 13:48 UTCEPSS rescore
  25. 2026-09-26 15:59 UTCEPSS rescore
Show 75 more
  1. 2026-09-25 04:48 UTCEG score recompute
  2. 2026-09-25 04:48 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 12:52 UTCGHSA enrichment
  5. 2026-09-23 23:48 UTCEG score recompute
  6. 2026-09-23 23:48 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 10:32 UTCGHSA enrichment
  9. 2026-09-22 21:30 UTCEG score recompute
  10. 2026-09-22 21:30 UTCGHSA enrichment
  11. 2026-09-22 06:43 UTCEG score recompute
  12. 2026-09-22 06:43 UTCGHSA enrichment
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-20 11:08 UTCGHSA enrichment
  15. 2026-09-19 17:57 UTCEG score recompute
  16. 2026-09-19 17:56 UTCGHSA enrichment
  17. 2026-09-19 03:52 UTCEG score recompute
  18. 2026-09-19 03:52 UTCGHSA enrichment
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-18 14:51 UTCGHSA enrichment
  21. 2026-09-18 01:13 UTCEG score recompute
  22. 2026-09-18 01:13 UTCGHSA enrichment
  23. 2026-09-17 19:31 UTCEPSS rescore
  24. 2026-09-17 01:17 UTCEG score recompute
  25. 2026-09-17 01:17 UTCGHSA enrichment
  26. 2026-09-16 14:08 UTCEPSS rescore
  27. 2026-09-16 06:11 UTCEG score recompute
  28. 2026-09-16 06:11 UTCGHSA enrichment
  29. 2026-09-16 05:15 UTCEPSS rescore
  30. 2026-09-15 17:09 UTCGHSA enrichment
  31. 2026-09-15 03:45 UTCEG score recompute
  32. 2026-09-15 03:44 UTCGHSA enrichment
  33. 2026-09-15 03:11 UTCEPSS rescore
  34. 2026-09-14 14:43 UTCGHSA enrichment
  35. 2026-09-14 01:43 UTCEG score recompute
  36. 2026-09-14 01:43 UTCGHSA enrichment
  37. 2026-09-13 16:47 UTCEPSS rescore
  38. 2026-09-13 12:42 UTCGHSA enrichment
  39. 2026-09-12 23:42 UTCEG score recompute
  40. 2026-09-12 23:42 UTCGHSA enrichment
  41. 2026-09-12 09:53 UTCGHSA enrichment
  42. 2026-09-11 20:52 UTCEG score recompute
  43. 2026-09-11 20:52 UTCGHSA enrichment
  44. 2026-09-11 14:53 UTCEPSS rescore
  45. 2026-09-11 07:46 UTCGHSA enrichment
  46. 2026-09-10 18:46 UTCEG score recompute
  47. 2026-09-10 18:46 UTCGHSA enrichment
  48. 2026-09-10 09:35 UTCEPSS rescore
  49. 2026-09-10 03:14 UTCGHSA enrichment
  50. 2026-09-09 06:52 UTCEG score recompute
  51. 2026-09-09 06:52 UTCGHSA enrichment
  52. 2026-09-08 22:01 UTCEPSS rescore
  53. 2026-09-07 19:05 UTCEG score recompute
  54. 2026-09-07 19:05 UTCGHSA enrichment
  55. 2026-09-07 16:01 UTCEPSS rescore
  56. 2026-09-06 20:52 UTCEG score recompute
  57. 2026-09-06 20:52 UTCGHSA enrichment
  58. 2026-09-06 13:47 UTCEPSS rescore
  59. 2026-09-06 07:49 UTCGHSA enrichment
  60. 2026-09-05 18:48 UTCEG score recompute
  61. 2026-09-05 18:48 UTCGHSA enrichment
  62. 2026-09-05 05:48 UTCGHSA enrichment
  63. 2026-09-04 16:47 UTCEG score recompute
  64. 2026-09-04 16:47 UTCGHSA enrichment
  65. 2026-09-04 05:07 UTCEPSS rescore
  66. 2026-09-04 03:31 UTCGHSA enrichment
  67. 2026-09-03 08:59 UTCEG score recompute
  68. 2026-09-03 08:59 UTCGHSA enrichment
  69. 2026-09-02 14:34 UTCEG score recompute▲ 0.40
  70. 2026-09-02 14:34 UTCGHSA enrichment
  71. 2026-09-02 14:29 UTCNVD updateCVSS v3 → 7.5
  72. 2026-09-02 14:12 UTCEPSS rescore
  73. 2026-09-01 22:21 UTCEG score recompute
  74. 2026-09-01 22:21 UTCGHSA enrichment
  75. 2026-09-01 13:54 UTCEPSS rescore

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-59651?
CVE-2026-59651 is a high vulnerability published on August 3, 2026. In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key. This issue also affects Bouncy Castle for Java LTS before 2.73.12.
When was CVE-2026-59651 disclosed?
CVE-2026-59651 was first published on August 3, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59651 actively exploited?
CVE-2026-59651 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59651?
CVE-2026-59651 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-59651?
A fix for CVE-2026-59651 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59651 are linked in the Vendor Advisories panel on this page.

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