CVE-2026-1584

EUVD-2026-20986
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 68%
Affected Products (NVD)
VendorProductVersion
gnugnutls
-
redhathardened_images
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gnutls28
bookworm
3.7.9-2+deb12u6
fixed
bookworm (security)
3.7.9-2+deb12u7
fixed
bullseye
3.7.1-5+deb11u5
fixed
bullseye (security)
3.7.1-5+deb11u10
fixed
forky
3.8.13-1
fixed
sid
3.8.13-1
fixed
trixie
3.8.9-3+deb13u3
fixed
trixie (security)
3.8.9-3+deb13u4
fixed
Common Weakness Enumeration
References
https://access.redhat.com/errata/RHSA-2026:7477
https://access.redhat.com/security/cve/CVE-2026-1584
https://bugzilla.redhat.com/show_bug.cgi?id=2435258
https://access.redhat.com/errata/RHSA-2026:7477
https://access.redhat.com/security/cve/CVE-2026-1584
https://bugzilla.redhat.com/show_bug.cgi?id=2435258
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1584.json