PT-2026-67237 · Unknown · Bouncy Castle For Java
CVE-2026-59644
·
Published
2026-08-03
·
Updated
2026-08-31
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Amber |
Name of the Vulnerable Software and Affected Versions
Bouncy Castle for Java versions prior to 1.85
Description
The MLS hash-ratchet mechanism accepts an arbitrary 32-bit generation counter provided by the sender. A hash-ratchet is a cryptographic process used to derive new keys for each message to ensure forward secrecy.
Recommendations
Update to version 1.85 or later.
Exploit
Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Bouncy Castle For Java