Vulnerability · Published Aug 11, 2026 · Assigned by microsoft
CVE-2026-62897.NET Framework Remote Code Execution Vulnerability
High 7.0
In plain English
A high-severity integer overflow in Microsoft .NET Framework 3.5 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.4%top 69.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | dotnet10-runtime | 10.0.13-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.24 | dotnet10-runtime | 10.0.12-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.22 | dotnet8-runtime | 8.0.31-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.23 | dotnet8-runtime | 8.0.31-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.24 | dotnet8-runtime | 8.0.31-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.22 | dotnet9-runtime | 9.0.20-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.23 | dotnet9-runtime | 9.0.20-r0 | ALPINE-CVE-2026-62897 |
| Alpine:v3.24 | dotnet9-runtime | 9.0.20-r0 | ALPINE-CVE-2026-62897 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 8.0.30 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 9.0.19 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 10.0.11 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 10.0.11 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 8.0.30 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 9.0.19 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 8.0.30 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 10.0.11 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 9.0.19 | GHSA-fx4q-gjrx-2jw6 |
| Ubuntu:22.04:LTS | dotnet7 | no fix listed | UBUNTU-CVE-2026-62897 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | .NET 10.0 runtime | 10.0.0 – before 10.0.11 |
| Microsoft | .NET 8.0 runtime | 8.0.0 – before 8.0.30 |
| Microsoft | .NET 9.0 runtime | 9.0.0 – before 9.0.19 |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 – before 2.0.50727.9183 & 3.0.30729.9169 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 – before 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 – before 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 – before 4.8.9344.0 |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 – before 17.14.38 |
| Microsoft | Microsoft Visual Studio 2026 version 18.8 | 18.0 – before 18.8.3 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- .NET Framework Remote Code Execution Vulnerability vendor-advisory, patch