CRITICALVulnerability
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NVD CRITICAL: CVE-2026-42010 — A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adlem...
·Source: NIST NVD
Updated:
Executive Summary
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
Analysis
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 Score: 7.1. Published: 2026-05-07T12:16:17.977.