CVE-2026-25075
March 23, 2026
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.
Affected Packages
https://github.com/strongswan/strongswan.git (GITHUB):
Affected version(s) >=android-2.3.3 <6.0.5Fix Suggestion:
Update to version 6.0.5https://github.com/strongswan/strongswan.git (GITHUB):
Affected version(s) >=android-2.3.3 <6.0.5Fix Suggestion:
Update to version 6.0.5https://github.com/strongswan/strongswan.git (GITHUB):
Affected version(s) >=android-2.3.3 <6.0.5Fix Suggestion:
Update to version 6.0.5https://github.com/strongswan/strongswan.git (GITHUB):
Affected version(s) >=android-2.3.3 <6.0.5Fix Suggestion:
Update to version 6.0.5Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
EPSS
Base Score:
0.15
