CVE-2026-59650
Published:August 03, 2026
Updated:August 04, 2026
In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value. This issue also affects Bouncy Castle for Java LTS before 2.73.12.
Affected Packages
https://github.com/bcgit/bc-java.git (GITHUB):
Affected version(s) >=r1rv60 <r1rv85Fix Suggestion:
Update to version r1rv85org.bouncycastle:bcprov-lts8on (JAVA):
Affected version(s) >=2.73.0 <2.73.12Fix Suggestion:
Update to version 2.73.12org.bouncycastle:bcprov-jdk18on (JAVA):
Affected version(s) >=1.71 <1.85Fix Suggestion:
Update to version 1.85org.bouncycastle:bcprov-jdk15to18 (JAVA):
Affected version(s) >=1.63 <1.85Fix Suggestion:
Update to version 1.85Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Input Validation
EPSS
Base Score:
0.26