Improper Null Termination Affecting gnutls package, versions <0:3.6.16-8.el8_10.6


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.86% (54th percentile)

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  • Snyk IDSNYK-ORACLE8-GNUTLS-17139648
  • published3 Jun 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

CVE-2026-42010  (opens in a new tab)
CWE-170  (opens in a new tab)

How to fix?

Upgrade Oracle:8 gnutls to version 0:3.6.16-8.el8_10.6 or higher.
This issue was patched in ELSA-2026-20611.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.

CVSS Base Scores

version 3.1