HIGH 7.5 Microsoft
CVE-2026-32241
Flannel vulnerable to cross-node remote code execution via extension backend BackendData injection
Microsoft Security Update 2026-Mar: Flannel vulnerable to cross-node remote code execution via extension backend BackendData injection
Affected Products
- azl3 flannel 0.24.2-26 on Azure Linux 3.0
- azl3 flannel 0.24.2-24 on Azure Linux 3.0
- cbl2 flannel 0.14.0-30 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32241
- https://nvd.nist.gov/vuln/detail/CVE-2026-32241
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-03-10 via Microsoft. Affected: azl3 flannel 0.24.2-26 on Azure Linux 3.0, azl3 flannel 0.24.2-24 on Azure Linux 3.0, cbl2 flannel 0.14.0-30 on CBL Mariner 2.0.
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