MicrosoftCVE-2026-69522
Microsoft Visual Studio: heap buffer overflow
High8.8CVE-2026-69522 · Published Sep 8, 2026 · updated Sep 9, 2026
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| .NET 10.0 Product | >= 10.0.0, < 10.0.12 | 10.0.12 |
| .NET 11.0 Product | >= 11.0.0, < 11.0 RC1 | 11.0 RC1 |
| .NET 8.0 Product | >= 8.0.0, < 8.0.31 | 8.0.31 |
| .NET 9.0 Product | >= 9.0.0, < 9.0.20 | 9.0.20 |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 Product | >= 3.0.0.0, < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0 | 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0 |
| Microsoft .NET Framework 3.5 AND 4.7.2 Product | >= 4.7.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 |
| Microsoft .NET Framework 3.5 AND 4.8 Product | >= 4.8.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0 |
| Microsoft .NET Framework 3.5 AND 4.8.1 Product | >= 4.8.1, < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0 | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0 |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Product | >= 4.7.0, < 4.7.4145.0 | 4.7.4145.0 |
| Microsoft .NET Framework 4.8 Product | >= 4.8.0, < 4.8.4806.0 | 4.8.4806.0 |
| Microsoft .NET Framework 4.8.1 Product | >= 4.8.0.0, < 4.8.9347.0 | 4.8.9347.0 |
| Microsoft Visual Studio 2022 version 17.14 Product | >= 17.14.0, < 17.14.40 | 17.14.40 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-122
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 8 | Microsoft Skype for Business: spoofing | High8.3 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: cross-site scripting | Medium6.5 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: spoofing | High7.1 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: information disclosure | Medium6.5 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: integer overflow | High7.5 | 6.0.9319.885+2 more |
| Sep 8 | Microsoft Skype for Business: out-of-bounds read | Medium6.5 | 6.0.9319.885+2 more |