How severe is CVE-2025-64704?

CVE-2025-64704 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-64704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-64704?

CVE-2025-64704 affects Bytecodealliance Webassembly Micro Runtime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-64704?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-64704 have an EU (EUVD) identifier?

Yes. CVE-2025-64704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199656.

When was CVE-2025-64704 published?

CVE-2025-64704 was published on 2025-11-25 and last updated on 2026-06-17.

CVE-2025-64704

CVE-2025-64704 is a medium-severity vulnerability in Bytecodealliance Webassembly Micro Runtime with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-754.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199656
Weakness: CWE-754
Affected product: Bytecodealliance Webassembly Micro Runtime
Published: 2025-11-25
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-64704?: 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.
How severe is CVE-2025-64704?: CVE-2025-64704 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-64704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-64704?: CVE-2025-64704 affects Bytecodealliance Webassembly Micro Runtime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-64704?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-64704 have an EU (EUVD) identifier?: Yes. CVE-2025-64704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199656.
When was CVE-2025-64704 published?: CVE-2025-64704 was published on 2025-11-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bytecodealliance:webassembly_micro_runtime:*:*:*:*:*:*:*:*

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