PT-2026-37377 · Gnutls+4 · Gnutls+4

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CVE-2026-42010

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Published

2026-04-21

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Updated

2026-09-03

CVSS v2.0

10

Critical

VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Name of the Vulnerable Software and Affected Versions gnutls versions prior to 3.8.13-1.1
Description Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) incorrectly match usernames containing a NUL character with truncated usernames. A remote attacker can exploit this by sending a specially crafted username to bypass the authentication process and gain unauthorized access.
Recommendations Update to version 3.8.13-1.1.

Fix

DoS

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Weakness Enumeration

Related Identifiers

ALSA-2026:20611
ALSA-2026:20612
ALSA-2026:20613
AZL-86775
BDU:2026-09650
CVE-2026-42010
ECHO-8172-5400-EF47
OESA-2026-2333
OESA-2026-2334
OESA-2026-2335
OESA-2026-2403
OESA-2026-2404
OPENSUSE-SU-2026:10691-1
RHSA-2026:13274
RHSA-2026:20611
RHSA-2026:26409
RHSA-2026:32962
RHSA-2026:33125
SUSE-SU-2026:2822-1
USN-8284-1
USN-8502-1

Affected Products

Linuxmint
Red Os
Rocky Linux
Ubuntu
Gnutls