High severity7.8NVD Advisory· Published Sep 12, 2026
CVE-2026-90556
CVE-2026-90556
Description
Freeciv versions before 3.2.6 contain a heap buffer overflow in worklist_load() when processing savegame files with declared worklist lengths exceeding the fixed array bound of 64 elements. Attackers can craft malicious savegame files that write past the entries array into adjacent heap-allocated struct fields, potentially corrupting memory when a user or server operator loads the file.
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.cnvd
- github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.cnvd
- github.com/freeciv/freeciv/commit/75ecde3e86ddf2fe775768450e9a290a4f4d4387nvd
- github.com/freeciv/freeciv/releases/tag/R3_2_6nvd
- redmine.freeciv.org/issues/2161nvd
- www.vulncheck.com/advisories/freeciv-before-3.2.6-heap-buffer-overflow-via-worklist-loadnvd
News mentions
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