CVE-2026-90557

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 v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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://redmine.freeciv.org/issues/2162
https://www.vulncheck.com/advisories/freeciv-3.1.0-through-3.2.5-out-of-bounds-read-via-savegame

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-12 18:16

Updated : 2026-09-15 18:19

NVD link : CVE-2026-90557

Mitre link : CVE-2026-90557

CVE.ORG link : CVE-2026-90557

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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