CVE-2026-40572 Details
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.
A privilege escalation vulnerability has been identified in NovumOS, a custom 32-bit operating system, in versions prior to 0.24. The issue arises in Syscall 15 (MemoryMapRange), which allows Ring 3 user-mode processes to map arbitrary virtual address ranges into their address space. This mapping can include critical kernel structures such as the Interrupt Descriptor Table (IDT), Global Descriptor Table (GDT), Task State Segment (TSS), and page tables, without proper validation against restricted areas. A local attacker could exploit this vulnerability to modify kernel interrupt handlers, leading to unauthorized execution of code in kernel mode.
Users can upgrade to NovumOS version 0.24, which addresses this vulnerability by adding forbidden memory range blocking to Syscall 15, preventing the mapping of critical kernel structures into user space.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MinecAnton209/NovumOS/releases/tag/v0.24 | [email protected] | Release Notes |
| https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-269 | Improper Privilege Management | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| minecanton209 novumos | < 0.24 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 27, 2026 | Reanalysis | [email protected] |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 18, 2026 | New CVE Received | [email protected] |