Vulnerability Description
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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Minecanton209 | Novumos | < 0.24 |
Related Weaknesses (CWE)
References
- https://github.com/MinecAnton209/NovumOS/releases/tag/v0.24Release Notes
- https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2ExploitVendor Advisory
FAQ
What is CVE-2026-40572?
CVE-2026-40572 is a vulnerability with a CVSS score of 9.0 (CRITICAL). 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 r...
How severe is CVE-2026-40572?
CVE-2026-40572 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-40572?
Check the references section above for vendor advisories and patch information. Affected products include: Minecanton209 Novumos.