CVE-2026-42010

CRITICAL EPSS 57.2%
Published May 7, 20261mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published May 7, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
57.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-170
CWE-626

Affected Products 8

VendorProductVersionRange
gnugnutls*any
redhathardened_images*any
redhatopenshift_container_platform4.0any
redhatenterprise_linux6.0any
redhatenterprise_linux7.0any
redhatenterprise_linux8.0any
redhatenterprise_linux9.0any
redhatenterprise_linux10.0any

References 8

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.