Nixpkgs security tracker
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CVE-2026-25075
7.5 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): High (H)
Activity log
- Created suggestion
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 failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.
References
-
https://www.strongswan.org/blog/2026/03/23/strongswan-vulnerability-(cve-2026-2… exploitvendor-advisory
-
https://www.vulncheck.com/advisories/strongswan-eap-ttls-avp-parsing-integer-un… third-party-advisory
Affected products
strongSwan
- <6.0.5
Matching in nixpkgs
pkgs.strongswan
OpenSource IPsec-based VPN Solution
pkgs.strongswanNM
OpenSource IPsec-based VPN Solution
pkgs.strongswanTNC
OpenSource IPsec-based VPN Solution
pkgs.strongswanTPM
OpenSource IPsec-based VPN Solution
pkgs.networkmanager-strongswan
NetworkManager's strongswan plugin