CVE-2026-44662: Rust-OpenSSL

Medium severity, CVSS 5.1. EPSS: 0.2% chance of exploitation in the next 30 days.

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.0 to before 0.10.79, CipherCtxRef::cipher_update, CipherCtxRef::cipher_update_vec, and symm::Crypter::update incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This only impacts users using AES key-wrap-with-padding ciphers. This vulnerability is fixed in 0.10.79.

Affected products

• Rust-OpenSSL Rust-OpenSSL: from 0.10.0, before 0.10.79 (fixed in 0.10.79)

Published 2026-05-14. Last modified 2026-06-17.