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
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
gnutls28
bookworm
3.7.9-2+deb12u5
fixed
bookworm (security)
3.7.9-2+deb12u6
fixed
bullseye
3.7.1-5+deb11u5
fixed
bullseye (security)
3.7.1-5+deb11u9
fixed
forky
3.8.12-3
fixed
sid
3.8.12-3
fixed
trixie
3.8.9-3+deb13u2
fixed
trixie (security)
3.8.9-3+deb13u2
fixed
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2026-1584
https://bugzilla.redhat.com/show_bug.cgi?id=2435258