CVE-2026-26127
Out-of-Bounds Read in .NET Causes Remote Denial of Service
Publication date: 2026-03-10
Last updated on: 2026-04-01
Assigner: Microsoft Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | .net | From 10.0.0 (inc) to 10.0.4 (exc) |
| microsoft | .net | From 9.0.0 (inc) to 9.0.14 (exc) |
| microsoft | bcl.memory | From 10.0.0 (inc) to 10.0.4 (exc) |
| microsoft | bcl.memory | From 9.0.0 (inc) to 9.0.14 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an out-of-bounds read in the .NET framework. It allows an unauthorized attacker to read memory outside the intended boundaries, which can lead to a denial of service (DoS) condition over a network.
How can this vulnerability impact me? :
The primary impact of this vulnerability is that an attacker can cause a denial of service, making the affected .NET service unavailable to legitimate users.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, it is important to apply the security updates provided by Microsoft for .NET as soon as they are available.
Since the vulnerability allows an unauthorized attacker to cause a denial of service over a network, limiting network exposure of affected .NET services until patches are applied can reduce risk.