CVE-2026-13586

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory 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: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Bouncy Castle for Java before 1.85, PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS). This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

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
0.4%
EPSS %ILE
26th
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

August 28, 2026

Advisory Details (3)

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

commit 75d60dfb4ca7 (bcgit/bc-java)

Fix landed in bcgit/bc-java commit 75d60dfb4ca7 — awaiting tagged release

https://github.com/bcgit/bc-java/commit/75d60dfb4ca72bea6da96234138bc9b1556ef5b0
github_commit

commit fa59cc23502f (bcgit/bc-java)

Fix landed in bcgit/bc-java commit fa59cc23502f — awaiting tagged release

https://github.com/bcgit/bc-java/commit/fa59cc23502f73def89d94374540cc92af647b96
generic

Home · bcgit/bc-java Wiki · GitHub

https://github.com/bcgit/bc-java/wiki/CVE-2026-13586

Vendor Advisories for CVE-2026-13586(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 192 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-13586?
CVE-2026-13586 is a high vulnerability published on August 3, 2026. In Bouncy Castle for Java before 1.85, PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS). This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
When was CVE-2026-13586 disclosed?
CVE-2026-13586 was first published on August 3, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13586 actively exploited?
CVE-2026-13586 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-13586?
CVE-2026-13586 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-13586?
A fix for CVE-2026-13586 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-13586 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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