Status: UPDATED
| Advisory ID: CVE-2026-42012
Key Details
| CVE | CVE-2026-42012 |
| CVSS Score / Version | 7.1 (High) / CVSS v3.1 |
| Updated | 2026-10-02 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is unchanged; confidentiality impact is low; integrity impact is high; availability impact is none. |
| Affected products | see table below |
| Classified as | CWE-295 (Improper Certificate Validation) |
| Exploitation prediction (EPSS) | 0.49% probability of exploitation in the next 30 days (40% percentile) -- FIRST.org's EPSS model. |
Affected Products, Subsystems & Sectors
| Subsystems | OT Supporting Infrastructure |
| Sectors | Multiple |
What to Know
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.
References