CVE-2025-34124
Heroes of Might and Magic III .h3m Map File Buffer Overflow
CVSS Score
0.0
EPSS Score
12.6%
EPSS Percentile
94th
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.
| CWE | CWE-121 CWE-20 CWE-94 |
| Vendor | the 3do company |
| Product | heroes of might and magic iii |
| Published | Jul 16, 2025 |
| Last Updated | Apr 7, 2026 |
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Affected Versions
The 3DO Company / Heroes of Might and Magic III
Complete 4.0.0.0 HD Mod 3.808 build 9 Demo 1.0.0.0
References
raw.githubusercontent.com: https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/homm3_h3m.rb exploit-db.com: https://www.exploit-db.com/exploits/37716 vulncheck.com: https://www.vulncheck.com/advisories/heroes-of-might-and-magic-iii-map-file-buffer-overflow
Credits
Pierre Lindblad John AAkerblo