Fluid Attacks Database

Description

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.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version
debian 13	bouncycastle	=1.80-3
debian 12	bouncycastle	=1.72-2 \|\| =1.77-1 \|\| =1.80-1 \|\| =1.80-2 \|\| =1.80-3
debian 11	bouncycastle	=1.68-2 \|\| =1.68-3 \|\| =1.68-4 \|\| =1.68-5 \|\| =1.69-1 \|\| =1.71-1 \|\| =1.72-1 \|\| =1.72-2 \|\| =1.77-1 \|\| =1.80-1 \|\| =1.80-2 \|\| =1.80-3
debian 14	bouncycastle	=1.80-3

Aliases

1. CVE-2026-596502. NVD-2026-596503. OSV-DEBIAN-2026-596504. OSV-2026-596505. SECURITY-TRACKER-CVE-2026-59650

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