CVE-2026-90557
Freeciv 3.1.0 through 3.2.5 Out-of-Bounds Read via Savegame
CVSS Score
6.1
EPSS Score
0.1%
EPSS Percentile
2th
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.
| CWE | CWE-125 |
| Vendor | freeciv |
| Product | freeciv |
| Published | Sep 12, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
freeciv / freeciv
3.1.0 < 3.2.6
References
github.com: https://github.com/freeciv/freeciv/commit/ef0c76c2765fe383140eb1a70dbea1228844152e github.com: https://github.com/freeciv/freeciv redmine.freeciv.org: https://redmine.freeciv.org/issues/2162 github.com: https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L6108 github.com: https://github.com/freeciv/freeciv/releases/tag/R3_2_6 github.com: https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L4282 vulncheck.com: https://www.vulncheck.com/advisories/freeciv-3.1.0-through-3.2.5-out-of-bounds-read-via-savegame
Credits
Tristan Madani