CVE-2026-90556 Freeciv - Buffer Overflow

Freeciv < 3.2.6 contains a heap buffer overflow caused by processing savegame files with worklist lengths exceeding array bounds in worklist_load(), letting attackers corrupt memory when loading crafted savegame files, exploit requires loading malicious savegame.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
12 September 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Update to version 3.2.6 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs