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CVE-2026-40355

MEDIUM

5.9

Descripcion

In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.

Detalles CVE

Puntuacion CVSS v3.15.9

SeveridadMEDIUM

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

Vector de ataqueNETWORK

ComplejidadHIGH

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado4/28/2026

Ultima modificacion4/28/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-476

Referencias

https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html(cve@mitre.org)

https://github.com/krb5/krb5/commit/2e75f0d9362fb979f5fc92829431a590a130929f(cve@mitre.org)

https://web.mit.edu/kerberos/advisories/(cve@mitre.org)

https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlaciones IOC

Sin correlaciones registradas

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