CVE-2026-1584

HIGH

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 v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 4/9/2026Modified: 4/22/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-1584 — A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this ...

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.

CVE-2026-1584
NIST NVD

References (2)

https://access.redhat.com/security/cve/CVE-2026-1584Vendor Advisoryhttps://bugzilla.redhat.com/show_bug.cgi?id=2435258Issue TrackingVendor Advisory