CVE-2026-127030

Description

A flaw was found in freeradius. An improper length validation in the EAP-FAST module allows a stack-based buffer overflow during session ticket processing. A remote, unauthenticated attacker can exploit this flaw by sending a specially crafted handshake request, causing the server process to crash and resulting in a Denial of Service (DoS).

References

https://github.com/FreeRADIUS/freeradius-server/commit/a5d09dad528d7a3a3c4c01158716ab85a12e09ef

https://github.com/FreeRADIUS/freeradius-server/commit/064567a08f3b9d9b4863fab6060fafe296ac7de9

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-124536

https://bugzilla.redhat.com/show_bug.cgi?id=2572340

https://access.redhat.com/security/cve/CVE-2026-127030

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3