CVE-2026-42766

The CVE-2026-42766 entry documents a NULL pointer dereference in OpenSSL’s CMS decryption for password-based CMS messages. Specifically, PasswordRecipientInfo.keyDerivationAlgorithm is OPTIONAL and may be absent; OpenSSL’s CMS decryption dereferences this field without checking, triggering an app...

CVE-2026-42766 Possible NULL Dereference in Password-Based CMS Decryption

Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.keyDerivationAlgorithm field is define...

PT-2026-47836

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description A NULL pointer dereference can occur during the decryption of password-encrypted Cryptographic Message Syntax CMS messages. The issue arises because the OpenSSL CMS implementation dereference...