CVE-2026-116842

DevilutionX 1.4.0 through 1.5.5 contains a heap buffer overflow vulnerability in the bundled libmpq libmpq__archive_dup routine when opening crafted MPQ archives. Attackers can supply an MPQ archive whose block table count exceeds its hash table count, causing memcpy to overflow the heap during startup and crash the game.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/diasurgical/DevilutionX/blob/7223eeac9e8274fbf665b4de86fda26d3b22c52f/3rdParty/libmpq/CMakeLists.txt
https://github.com/diasurgical/DevilutionX/issues/8758
https://github.com/diasurgical/DevilutionX/pull/8482
https://github.com/diasurgical/libmpq/blob/b78d66c6fee6a501cc9b95d8556a129c68841b05/libmpq/mpq.c#L505
https://hackmd.io/@haindpwn/devilutionx-libmpq-hash-block-table-oob
https://www.vulncheck.com/advisories/devilutionx-1.4.0-through-1.5.5-heap-buffer-overflow-via-libmpq-archive-dup
https://hackmd.io/@haindpwn/cve-2026-116841-116842-devilutionx-libmpq-hash-block-table-oob

Configurations

No configuration.

History

31 Oct 2026, 03:17

Type	Values Removed	Values Added
References		() https://hackmd.io/@haindpwn/cve-2026-116841-116842-devilutionx-libmpq-hash-block-table-oob -

27 Oct 2026, 01:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-27 01:19

Updated : 2026-10-31 03:17

NVD link : CVE-2026-116842

Mitre link : CVE-2026-116842

CVE.ORG link : CVE-2026-116842

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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