CVE-2026-25075

A flaw was found in strongSwan. An unauthenticated remote attacker can exploit an integer underflow vulnerability in the EAP-TTLS AVP Attribute-Value Pair parser. By sending specially crafted AVP data with invalid length fields during IKEv2 Internet Key Exchange version 2 authentication, the...

CVE-2026-25075 strongSwan 4.5.0 < 6.0.5 EAP-TTLS AVP Parsing Integer Underflow

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the...

CVE-2026-25075

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the...