CVE-2026-58649
.NET Information Disclosure Vulnerability
MEDIUM 6.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.36 % · percentile 30 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
Weaknesses (CWE)
- CWE-346 — Origin Validation Error
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N | NVD · secure@microsoft.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-73722
- GCVE · GCVE-0-2026-58649
CERT-FR advisories
- CERTFR-2026-AVI-1149 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1146 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:11.0.0:preview6:*:*:*:*:*:*cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*≥ 8.0.100 < 8.0.130cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*≥ 8.0.200 < 8.0.424cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*≥ 9.0.100 < 9.0.120cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*≥ 9.0.200 < 9.0.317cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*≥ 10.0.100 < 10.0.111cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*≥ 10.0.200 < 10.0.400cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:-:*:*≥ 17.14.0 < 17.14.40cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*≥ 18.9.0 < 18.9.3
Affected products
| Product | Versions |
|---|---|
| Microsoft · .NET 10.0 | affected 10.0.0 < 10.0.111, 10.0.400 |
| Microsoft · .NET 11.0 | affected 11.0.0 < 11.0 RC1 |
| Microsoft · .NET 8.0 | affected 8.0.0 < 8.0.130, 8.0.424 |
| Microsoft · .NET 9.0 | affected 9.0.0 < 9.0.120, 9.0.317 |
| Microsoft · Microsoft Visual Studio 2022 version 17.14 | affected 17.14.0 < 17.14.40 |
| Microsoft · Microsoft Visual Studio 2026 version 18.9 | affected 18.9.0 < 18.9.3 |
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 |