{"cve":"CVE-2026-42010","nvd":{"published":"2026-05-07T12:16:17.977","modified":"2026-10-14T20:17:39.123","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-170","CWE-626"],"references":["https://access.redhat.com/errata/RHSA-2026:13274","https://access.redhat.com/errata/RHSA-2026:20611","https://access.redhat.com/errata/RHSA-2026:20612","https://access.redhat.com/errata/RHSA-2026:20613","https://access.redhat.com/errata/RHSA-2026:26319"],"products":["gnu:gnutls","redhat:enterprise_linux","redhat:hardened_images","redhat:openshift_container_platform"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-42010","score":0.0105,"percentile":0.64041,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}