CVE-2026-1584CWE-476

CVE-2026-1584

High · published April 9, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
70.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01323 · 70.7th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-04-09T22:16Z
Affected products (2)
ProductVersionsFixed in
gnu/gnutlsall versions—
redhat/hardened_imagesall versions—
References (7)
https://access.redhat.com/errata/RHSA-2026:7477 · [email protected]https://access.redhat.com/security/cve/CVE-2026-1584 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2435258 · [email protected]https://access.redhat.com/errata/RHSA-2026:7477 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-1584 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2435258 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1584.json · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
EPSS history
Timeline
  • 09 APR 18:00Z
    Gnutls: gnutls: remote denial of service via crafted clienthello with invalid psk binder
    cvelistv5