CVE-2026-47304
.NET Security Feature Bypass Vulnerability
At a glance
- Severity
- HIGH 8.1
- EPSS
- EPSS 0.29 % · percentile 21 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
Advisories
- GHSA-g8r8-53c2-pm3f — Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
European references
- ENISA EUVD · EUVD-2026-44355
- GCVE · GCVE-0-2026-47304
CERT-FR advisories
- CERTFR-2026-AVI-0872 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.0.29cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 9.0.0 < 9.0.18cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 10.0.0 < 10.0.6cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*≥ 15.0 ≤ 15.9cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*≥ 16.0 ≤ 16.11cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*≥ 17.12.0 < 17.12.22cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*≥ 17.14.0 < 17.14.36cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*≥ 18.7.0 < 18.7.4cpe:2.3:a:microsoft:visual_studio_2026:18.5.0:*:*:*:*:*:*:*
Affected products
References
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |