CVE-2026-116841
CVE-2026-116841
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- github.com/diasurgical/DevilutionX/blob/7223eeac9e8274fbf665b4de86fda26d3b22c52… (technical-description)
- github.com/diasurgical/DevilutionX/issues/8758 (issue-tracking)
- github.com/diasurgical/DevilutionX/pull/8482 (issue-tracking, patch)
- github.com/diasurgical/libmpq/blob/b78d66c6fee6a501cc9b95d8556a129c68841b05/lib… (technical-description)
- hackmd.io/@haindpwn/devilutionx-libmpq-hash-block-table-oob (technical-description)
- www.vulncheck.com/advisories/devilutionx-1.4.0-through-1.5.5-out-of-bounds-read… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116841?
- CVE-2026-116841 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-10-27.
- How severe is CVE-2026-116841?
- Medium severity. CVSS v3 base score is 5.5 out of 10.