CVE-2026-90556
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-122
Desbordamiento de búfer basado en memoria dinámica (Heap)
Fecha de publicación:
12/09/2026
Última modificación:
23/09/2026
Descripción
*** Pendiente de traducción *** 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.
Impacto
Puntuación base 4.0
8.50
Gravedad 4.0
ALTA
Puntuación base 3.x
7.80
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://github.com/freeciv/freeciv
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L788
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L964
- https://github.com/freeciv/freeciv/commit/75ecde3e86ddf2fe775768450e9a290a4f4d4387
- https://github.com/freeciv/freeciv/releases/tag/R3_2_6
- https://redmine.freeciv.org/issues/2161
- https://www.vulncheck.com/advisories/freeciv-before-3.2.6-heap-buffer-overflow-via-worklist-load