CVE-2026-59651 · Symaro Security Advisory

Description

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)

Base score	7.1
Severity	High
Version	CVSS 4.0
Vector	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
Provided by	CNA

Weaknesses

CWE-326 — CWE-326 Inadequate Encryption Strength

Affected products

Vendor	Product	Versions
Legion of the Bouncy Castle Inc.	BC-JAVA	0 to <1.85
Legion of the Bouncy Castle Inc.	BC-LTS-JAVA	2.73.0 to <2.73.12

References

https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059651 (vendor-advisory)
https://github.com/bcgit/bc-java/commit/faf5daa6e9b8460f862afc0af1cc0da365f7d4d2 (patch)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 03 Aug 2026 08:53 UTC.