CVEvulnerability
CVE-2026-90556
8.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-09-12
- Last modified
- 2026-09-23
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.5 HIGH — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-122
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.
Related
Weakness · CWE (1)
- CWE-122 Heap-based Buffer Overflow weakness
References
- https://github.com/freeciv/freeciv github.com
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L788 github.com
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L964 github.com
- https://github.com/freeciv/freeciv/commit/75ecde3e86ddf2fe775768450e9a290a4f4d4387 github.com
- https://github.com/freeciv/freeciv/releases/tag/R3_2_6 github.com
- https://redmine.freeciv.org/issues/2161 redmine.freeciv.org
- https://www.vulncheck.com/advisories/freeciv-before-3.2.6-heap-buffer-overflow-via-worklist-load www.vulncheck.com