CVE-2026-16001 IesEngine stream-mode MAC forgery via length-dependent KDF split

Exposure of the message authentication key through the encryption keystream in the stream mode of IesEngine an IesEngine constructed without a block cipher in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has observed one encrypted message with known plainte...

CVE-2026-12816

A flaw was found in Bouncy Castle for Java. This vulnerability allows for Message Authentication Code MAC forgery in the IESEngine stream-mode. The issue arises from a length-dependent Key Derivation Function KDF split, which an attacker could exploit to bypass integrity checks. This could lead t...

CVE-2026-12816

In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12816 IESEngine stream-mode MAC forgery via length-dependent KDF split

In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

CVE-2026-12816

Bouncy Castle for Java contains an IESEngine stream-mode MAC forgery flaw via a length-dependent KDF split, affecting versions before 1.85 (and Bouncy Castle for Java LTS before 2.73.12). The issue is documented in CVE-2026-12816 with no exploitation details provided in the supplied sources. No r...

CVE-2026-12816: Improper Validation of Integrity Check Value

In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. This issue also affects Bouncy Castle for Java LTS before 2.73.12...