CVE-2026-50721

Libreswan, via the function RSAauthenticatehashsignaturerawrsa, did not correctly verify the length of the authentication hash when the SIG payload of an IKEv1 packet was encoded using PKCS 1 RSA Encryption as per RFC 2313. A remote attacker can use a variation on the Bleichenbacher attack to for...

PT-2026-55315

Name of the Vulnerable Software and Affected Versions Libreswan affected versions not specified Description Libreswan fails to correctly verify the authentication hash length when the SIG payload of an IKEv1 packet is encoded using PKCS 1 RSA Encryption. This occurs within the RSA authenticate ha...