Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- 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/ef0c76c2765fe383140eb1a70dbea122884415
- https://github.com/freeciv/freeciv/releases/tag/R3_2_6
- https://redmine.freeciv.org/issues/2162
- https://www.vulncheck.com/advisories/freeciv-3.1.0-through-3.2.5-out-of-bounds-r
FAQ
What is CVE-2026-90557?
CVE-2026-90557 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 mal...
How severe is CVE-2026-90557?
CVE-2026-90557 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-90557?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.