CVE-2026-40572

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 v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.5 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/MinecAnton209/NovumOS/releases/tag/v0.24	Release Notes
https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:minecanton209:novumos:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-18 01:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40572

Mitre link : CVE-2026-40572

CVE.ORG link : CVE-2026-40572

JSON object : View

Products Affected

minecanton209

novumos

CWE

CWE-269

Improper Privilege Management

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