CVE-2026-40572
NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)
CVSS Score
9.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-269 |
| Vendor | minecanton209 |
| Product | novumos |
| Published | Apr 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
MinecAnton209 / NovumOS
< 0.24