What is CVE-2026-40572?

CVE-2026-40572 is a critical-severity vulnerability in Minecanton209 Novumos, classified under Improper Privilege Management. CVSS score: 9.0/10. Published 2026-04-18.

How severe is CVE-2026-40572?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Privilege escalation in Minecanton209 Novumos

CVE-2026-40572

NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. In versions prior to 0.24, Syscall 15 (MemoryMapRange) allows Ring 3 user-mode processes to map arbitrary virtual address ranges into their address space without…

Vulnerability class: Privilege Escalation

EPSS: 0.000 (0.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.

Affected products

Minecanton209 Novumos — versions < 0.24

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2 (x_refsource_CONFIRM)
https://github.com/MinecAnton209/NovumOS/releases/tag/v0.24 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40572?: CVE-2026-40572 is a critical-severity vulnerability in Minecanton209 Novumos, classified under Improper Privilege Management. CVSS score: 9.0/10. Published 2026-04-18.
How severe is CVE-2026-40572?: Critical severity. CVSS v3 base score is 9.0 out of 10.