CVE-2026-45445

A flaw was found in OpenSSL. Applications that use the AES-OCB encryption method with a specific one-shot interface EVPCipher will have their provided Initialization Vector IV silently discarded. This leads to the same internal cryptographic value being used repeatedly, which compromises the...

CVE-2026-45445

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

CVE-2026-45445

CVE-2026-45445 describes a vulnerability in AES-OCB when using OpenSSL EVP_Cipher() in one-shot mode: the application-supplied IV is ignored, causing every encrypted message under the same key to use the same effective nonce. This leads to key/nonce reuse and potential confidentiality loss, and, ...

CVE-2026-45445 AES-OCB IV Ignored on EVP_Cipher() Path

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...