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TI-2025-24283 Aliases CVE-2025-34124GHSA-72f4-q73h-wfwq

Heroes of Might and Magic III .h3m Map File Buffer Overflow

Priority HIGH 72CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00522 44th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
The 3DO CompanyHeroes of Might and Magic IIIComplete 4.0.0.0; HD Mod 3.808 build 9; Demo 1.0.0.0—No fix listedCNA
  • Heroes of Might and Magic III VendorThe 3DO Company Affected Complete 4.0.0.0; HD Mod 3.808 build 9; Demo 1.0.0.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-34124
  2. 2026-10-03 Alias added: GHSA-72f4-q73h-wfwq

References

Exploit 2

  • TI-2004-01398 Format string vulnerability in Army Men RTS 1.0 allows remote attackers to cause a denial… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences