CVE-2026-69439
.NET and Visual Studio Elevation of Privilege Vulnerability
HIGH 8.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.82 % · percentile 57 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
Weaknesses (CWE)
- CWE-122 — Heap-based Buffer Overflow
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · secure@microsoft.com (Secondary) |
Advisories
- GHSA-527h-q9f6-p7qx — Microsoft Security Advisory CVE-2026-69439 – .NET and Visual Studio Elevation of Privilege Vulnerability
European references
- ENISA EUVD · EUVD-2026-73720
- GCVE · GCVE-0-2026-69439
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:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.0.31cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 9.0.0 < 9.0.20cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 10.0.0 < 10.0.12cpe: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: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 < 10.0.12 |
| Microsoft · .NET 11.0 | affected 11.0.0 < 11.0 RC1 |
| Microsoft · .NET 8.0 | affected 8.0.0 < 8.0.31 |
| Microsoft · .NET 9.0 | affected 9.0.0 < 9.0.20 |
| 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 |