CVE-2026-59651

7.1 highEPSS 0.2%

High (7.1) in bouncycastle. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.1 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWE: CWE-326
Published: 2026-08-03
Modified: 2026-09-02
Record from: the NVD, synced 2026-10-19

Affected

bouncycastle:bc-java
bouncycastle:bouncy_castle_for_java_lts

References

https://github.com/bcgit/bc-java/commit/faf5daa6e9b8460f862afc0af1cc0da365f7d4d2
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059651

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