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CVE-2026-25075

HIGH

7.5

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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/23/2026

Derniere modification3/27/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-191CWE-476

References

https://www.strongswan.org/blog/2026/03/23/strongswan-6.0.5-released.html(disclosure@vulncheck.com)

https://www.strongswan.org/blog/2026/03/23/strongswan-vulnerability-(cve-2026-25075).html(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/strongswan-eap-ttls-avp-parsing-integer-underflow(disclosure@vulncheck.com)

https://lists.debian.org/debian-lts-announce/2026/03/msg00016.html(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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