CVE-2025-26682 ASP.NET Core and Visual Studio Denial of Service Vulnerability
An unauthorized attacker can cause a denial of service in ASP.NET Core by exploiting resource allocation limits.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-26682?
CVE-2025-26682 is a high-severity denial of service vulnerability in Microsoft Visual Studio 2022, published on 8 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Weakness: CWE-770
Which versions are affected by CVE-2025-26682?
1 open source package ship an affected version, including aspnet-core. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
aspnet-core Bitnami | From 8.0.0 | 8.0.15, 9.0.4 |
Products include Microsoft Asp.net Core, Microsoft Visual Studio 2022.
How do I fix CVE-2025-26682?
Upgrade aspnet-core to a fixed version for your release line: 8.0.15 or 9.0.4.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-26682 being exploited?
There is no known exploitation of CVE-2025-26682 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Visual Studio 2022
- CVE-2025-55315 ASP.NET Security Feature Bypass Vulnerability
- CVE-2026-88092 ASP.NET Core Tampering Vulnerability
- CVE-2026-40372 ASP.NET Core Elevation of Privilege Vulnerability
- CVE-2021-43877 ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
- CVE-2020-0603 Remote code execution in ASP.NET Core
Sources
Also known as BELL-CVE-2025-26682, BIT-aspnet-core-2025-26682, GHSA-gf2r-7cq8-xww9, UBUNTU-CVE-2025-26682, USN-7427-1.