CVE-2021-26430 Azure Sphere Denial of Service Vulnerability

What is CVE-2021-26430?

CVE-2021-26430 is a medium-severity denial of service vulnerability in Microsoft Azure Sphere, published on 12 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Azure Sphere Denial of Service Vulnerability

Which versions are affected by CVE-2021-26430?

It affects 1 product.

Products include Microsoft Azure Sphere.

How do I fix CVE-2021-26430?

No fix has been published for CVE-2021-26430 yet. Limit exposure of the affected software until one is available.

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-2021-26430 being exploited?

There is no known exploitation of CVE-2021-26430 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Azure Sphere

• CVE-2021-27080 Azure Sphere Unsigned Code Execution Vulnerability Critical 9.3
• CVE-2021-28460 Azure Sphere Unsigned Code Execution Vulnerability High 8.1
• CVE-2020-16970 Azure Sphere Unsigned Code Execution Vulnerability High 8.1
• CVE-2020-35608 Code injection in n/a High 7.8
• CVE-2021-26429 Azure Sphere Elevation of Privilege Vulnerability High 7.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-c556-742c-cv9q.