What is the CVSS score of CVE-2025-64704?

CVE-2025-64704 has a CVSS 3.1 base score of 4.7 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Webassembly Micro Runtime are affected by CVE-2025-64704?

Organizations using v128.store instruction. This issue has been patched in should be aware of moderate risk from CVE-2025-64704 rated CVSS 4.7.

Is there a public PoC exploit available for CVE-2025-64704?

Yes, a public proof-of-concept exploit is available for CVE-2025-64704. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-64704?

Within 30 days: Identify affected systems running v128.store instruction. This issue has been patched in and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Webassembly Micro Runtime CVE-2025-64704

MEDIUM

Improper Check for Unusual or Exceptional Conditions (CWE-754)

2025-11-25 security-advisories@github.com

Information Disclosure Webassembly Micro Runtime Bytecodealliance

4.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.7 MEDIUM

AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:23 vuln.today

PoC Detected

Dec 03, 2025 - 18:50 vuln.today

Public exploit code

CVE Published

Nov 25, 2025 - 23:15 nvd

MEDIUM 4.7

DescriptionGitHub Advisory

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.

AnalysisAI

WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Rated medium severity (CVSS 4.7), this vulnerability is no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-754. 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. Affected products include: Bytecodealliance Webassembly Micro Runtime. Version information: version 2.4.4.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.