CVE-2025-27498: Rustcrypto Aeads

Medium severity, CVSS 5.7. EPSS: 0.1% chance of exploitation in the next 30 days.

aes-gcm is a pure Rust implementation of the AES-GCM. In decrypt_in_place_detached, the decrypted ciphertext (which is the correct ciphertext) is exposed even if the tag is incorrect. This is because in decrypt_inplace in asconcore.rs, tag verification causes an error to be returned with the plaintext contents still in buffer. The vulnerability is fixed in 0.4.3.

Affected products

• Rustcrypto Aeads: before 0.4.3 (fixed in 0.4.3)

Published 2025-03-03. Last modified 2026-06-17.