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Affected Component
Analysis
strongswan
Patched
Name
CVE-2026-25075
Description
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 failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
8.7
CVSSv4
7.5
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
strongswan (buildroot:2025.02.x)
#
Title
Author
Resolve
1
eap-ttls: Prevent crash if AVP length header field is invalid
Tobias Brunner <tobias@strongswan.org>
CVE-2026-25075
strongswan (yocto:scarthgap)
#
Title
Author
Resolve
1
eap-ttls: Prevent crash if AVP length header field is invalid
Tobias Brunner <tobias@strongswan.org>
CVE-2026-25075