Vulnerability · Published Jul 16, 2025 · Assigned by VulnCheck
CVE-2025-34124Heroes of Might and Magic III .h3m Map File Buffer Overflow
High 8.4
In plain English
A high-severity stack buffer overflow in Heroes of Might and Magic III from The 3DO Company. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit.
Official description
A buffer overflow vulnerability exists in Heroes of Might and Magic III Complete 4.0.0.0, HD Mod 3.808 build 9, and Demo 1.0.0.0 via malicious .h3m map files that exploit object sprite name parsing logic. The vulnerability occurs during in-game map loading when a crafted object name causes a buffer overflow, potentially allowing arbitrary code execution. Exploitation requires the victim to open a malicious map file within the game.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The 3DO Company | Heroes of Might and Magic III | Complete 4.0.0.0HD Mod 3.808 build 9Demo 1.0.0.0 |
Weakness: CWE-121, CWE-20, CWE-94 · 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