MEDIUM 4.7 Microsoft
CVE-2025-64704
WebAssembly Micro Runtime vulnerable to a segmentation fault in v128.store instruction
Microsoft Security Update 2026-Aug: WebAssembly Micro Runtime vulnerable to a segmentation fault in v128.store instruction
Affected Products
- azl3 fluent-bit 3.1.9-6 on Azure Linux 3.0
- cbl2 fluent-bit 3.0.6-4
- cbl2 fluent-bit 3.0.6-4 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64704
- https://nvd.nist.gov/vuln/detail/CVE-2025-64704
This medium severity vulnerability with a CVSS score of 4.7 was published on 2026-08-06 via Microsoft. Affected: azl3 fluent-bit 3.1.9-6 on Azure Linux 3.0, cbl2 fluent-bit 3.0.6-4, cbl2 fluent-bit 3.0.6-4 on CBL Mariner 2.0.
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