5.5

CVE-2025-64704: bytecodealliance wasm-micro-runtime

CVSS: 5.5v3.1MediumAnalyzed
Published 25-11-2025Last modified 26-11-2025
Open JSON

Vulnerability summary

CVE-2025-64704 is a medium (CVSS 5.5) vulnerability in bytecodealliance wasm-micro-runtime. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 7.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 25-11-2025
    PublishedVulnerability first disclosed.
  2. 26-11-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Wasm Micro Runtime

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Bytecodealliance2 products

1 vendor · 2 products

References

2 links