CVE-2026-90557
Publication date 14 September 2026
Last updated 14 September 2026
Ubuntu priority
Description
Freeciv versions 3.1.0 through 3.2.5 contain an out-of-bounds read vulnerability in sg_load_player_unit() when processing savegame files with invalid unit activity indices. An attacker can craft a malicious savegame file with an out-of-range activity index that bypasses bounds checking and causes a crash or limited heap memory exposure when loaded.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| freeciv | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version:
Base score
6.9 · Medium
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Base score
6.1 · Medium
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-90557
- https://redmine.freeciv.org/issues/2162
- https://github.com/freeciv/freeciv
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L4282
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L6108
- https://github.com/freeciv/freeciv/commit/ef0c76c2765fe383140eb1a70dbea1228844152e
- https://github.com/freeciv/freeciv/releases/tag/R3_2_6
- https://www.vulncheck.com/advisories/freeciv-3.1.0-through-3.2.5-out-of-bounds-read-via-savegame