CVE-2026-90557

Freeciv 3.1.0 through 3.2.5 Out-of-Bounds Read via Savegame

MEDIUM
6.1
CVSS Score
Published: September 12, 2026 at 06:06 PM UTC
Updated: September 23, 2026 at 05:30 PM UTC
1 product affected across 1 vendorFreeciv

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.1.0 ≤ v < 3.2.63.1.0
Affected range stops below 3.2.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMVulnCheck
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-125

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