CVE-2026-40572
NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)
- State
- Published
- Severity
- 9.0 Critical
- Published
- Apr 18, 2026
- Updated
- Apr 20, 2026
- Reserved
- Apr 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.0 Critical | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
NovumOSMinecAnton209 |
|
References
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