CVE-2026-33250

Katalog CVE

CVSS 7.5 · High EPSS 1,2%

Kerentanan Improper Input Validation. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

Freeciv21 is a free open source, turn-based, empire-building strategy game. Versions prior to 3.1.1 crash with a stack overflow when receiving specially-crafted packets. A remote attacker can use this to take down any public server. A malicious server can use this to crash the game on the player's machine. Authentication is not needed and, by default, logs do not contain any useful information. All users should upgrade to Freeciv21 version 3.1.1. Running the server behind a firewall can help mitigate the issue for non-public servers. For local games, Freeciv21 restricts connections to the current user and is therefore not affected.

Rincian

Terbit di NVD

24 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 3.1

7.5 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

1,2% peluang dieksploitasi; lebih tinggi dari 68,0% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/longturn/freeciv21/commit/ad8e18ca22595529599782b2984bf44df8d69ed6
• https://github.com/longturn/freeciv21/releases/tag/v3.1.1
• https://github.com/longturn/freeciv21/security/advisories/GHSA-f76g-6w3f-f6r3
• https://redmine.freeciv.org/issues/1955