diasurgical DevilutionX up to 1.5.5 libmpq libmpq__file_number_from_hash block_table_index out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in diasurgical DevilutionX up to 1.5.5. Impacted is the function libmpq__file_number_from_hash of the component libmpq. The manipulation of the argument block_table_index leads to out-of-bounds. This vulnerability is referenced as CVE-2026-116841. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in diasurgical DevilutionX up to 1.5.5. This issue affects the function libmpq__file_number_from_hash of the component libmpq. The manipulation of the argument block_table_index with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

DevilutionX 1.4.0 through 1.5.5 contains an out-of-bounds read vulnerability in the bundled libmpq libmpq__file_number_from_hash function that allows attackers to read heap memory via unchecked block_table_index values. Attackers can place a crafted .mpq archive in the game's data path, such as a mod, to trigger reads past mpq_map and crash the game.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-116841 since 10/27/2026. The exploitation is known to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• diasurgical

Name

• DevilutionX

Version

• 1.5.0
• 1.5.1
• 1.5.2
• 1.5.3
• 1.5.4
• 1.5.5

Website

• Product: https://github.com/diasurgical/DevilutionX/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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