CVE-2026-40317

Katalog CVE

CVSS 9.3 · Critical EPSS 0,20%

Kerentanan Improper Input Validation pada minecanton209 novumos. Skor CVSS 3.1 9.3 (Critical) menurut github.com.

Deskripsi (NVD)

NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. In versions prior to 0.24, Syscall 12 (JumpToUser) accepts an arbitrary entry point address from user-space registers without validation, allowing any Ring 3 user-mode process to jump to kernel addresses and execute arbitrary code in Ring 0 context, resulting in local privilege escalation. This issue has been fixed in version 0.24. If developers are unable to immediately update, they should restrict syscall access by running the system in single-user mode without Ring 3, and disable user-mode processes by only running kernel shell with no user processes. This issue has been fixed in version 0.24.

Rincian

Terbit di NVD

18 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-269: Improper Privilege Management

EPSS (30 hari)

0,20% peluang dieksploitasi; lebih tinggi dari 8,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-xjx3-gjh9-45fm exploit · advisory vendor
• https://github.com/MinecAnton209/NovumOS/releases/tag/v0.24 release notes