CVE-2026-40572

critical · 9

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 validating against forbidden regions, including critical kernel structures such as the IDT, GDT, TSS, and page tables. A local attacker can exploit this to modify kernel interrupt handlers, resulting in privilege escalation from user mode to kernel context. This issue has been fixed in version 0.24.

CVSS

0.2%

EPSS (exploit prob.)

12th

EPSS percentile

2026-04-18

Published

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Weaknesses

CWE-269

Affected products

Vendor	Product	Affected versions
minecanton209	novumos	< 0.24

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-40572