MEDIUM 5.3 Microsoft

CVE-2025-58749

WAMR runtime hangs or crashes with large memory.fill addresses in LLVM-JIT mode

Microsoft Security Update 2025-Sep: WAMR runtime hangs or crashes with large memory.fill addresses in LLVM-JIT mode

Affected Products

cbl2 fluent-bit 3.0.6-4 on CBL Mariner 2.0
azl3 fluent-bit 3.1.9-5 on Azure Linux 3.0
cbl2 fluent-bit 3.0.6-3 on CBL Mariner 2.0
azl3 fluent-bit 3.1.9-6 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-58749
https://nvd.nist.gov/vuln/detail/CVE-2025-58749

Published: 2025-09-09 · Source: Microsoft · Feed updated: 2026-08-04

This medium severity vulnerability with a CVSS score of 5.3 was published on 2025-09-09 via Microsoft. Affected: cbl2 fluent-bit 3.0.6-4 on CBL Mariner 2.0, azl3 fluent-bit 3.1.9-5 on Azure Linux 3.0, cbl2 fluent-bit 3.0.6-3 on CBL Mariner 2.0 and 1 more.

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