CVE-2026-1584

A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and resulting in a remote Denial of Service (DoS) condition.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:7477
https://access.redhat.com/security/cve/CVE-2026-1584	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2435258	Issue Tracking Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:7477
https://access.redhat.com/security/cve/CVE-2026-1584	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2435258	Issue Tracking Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1584.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gnu:gnutls:-:::::::*
	cpe:2.3:a:redhat:hardened_images:-:::::::*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Se encontró una falla en gnutls. Un atacante remoto no autenticado puede explotar esta vulnerabilidad enviando un mensaje ClientHello especialmente diseñado con un valor de enlace de clave precompartida (PSK) no válido durante el handshake TLS. Esto puede llevar a una desreferencia de puntero NULL, causando que el servidor se bloquee y resultando en una condición remota de denegación de servicio (DoS).

Information

Published : 2026-04-09 18:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-1584

Mitre link : CVE-2026-1584

CVE.ORG link : CVE-2026-1584

JSON object : View

Products Affected

redhat

hardened_images

gnu

gnutls

CWE

CWE-476

NULL Pointer Dereference

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