CVE-2025-64704: WebAssembly Micro Runtime vulnerable to a segmentation fault in v128.store instruction

Published Nov 25, 2025
·
Updated

WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, WAMR is susceptible to a segmentation fault in v128.store instruction. This issue has been patched in version 2.4.4.

Other sources

WebAssembly Micro Runtime vulnerable to a segmentation fault in v128.store instruction

— Microsoft

Affected Software

4 affected components
WebAssembly Micro Runtime<2.4.4
bytecodealliance Webassembly Micro Runtime<2.4.4
Microsoft azl3 fluent-bit 3.1.9-6
Microsoft cbl2 fluent-bit 3.0.6-4

Event History

Nov 25, 2025
CVE Published
via MITRE·10:06 PM
Data Sourced
via MITRE·10:06 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·11:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 29, 2025
Data Sourced
via Microsoft·01:02 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:02 AM
Affected Software
Updated
via Microsoft·01:02 AM
DescriptionSeverity
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Frequently Asked Questions

1

What is the severity of CVE-2025-64704?

CVE-2025-64704 has a high severity rating due to its potential to cause a segmentation fault, impacting application stability.

2

How do I fix CVE-2025-64704?

To fix CVE-2025-64704, upgrade WebAssembly Micro Runtime to version 2.4.4 or later.

3

What versions are affected by CVE-2025-64704?

CVE-2025-64704 affects all versions of WebAssembly Micro Runtime prior to 2.4.4.

4

What is the impact of CVE-2025-64704?

The impact of CVE-2025-64704 includes application crashes due to a segmentation fault during the execution of the v128.store instruction.

5

Is CVE-2025-64704 related to WebAssembly applications?

Yes, CVE-2025-64704 specifically pertains to WebAssembly applications utilizing the WebAssembly Micro Runtime.

Company

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