CVEvulnerability

CVE-2026-40572

9.0 CRITICAL Published 2026-04-18 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-18
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.0 CRITICAL — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Weaknesses
CWE-269

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.

Affected configurations

• minecanton209 novumos (< 0.24)

Related

Weakness · CWE (1)

  • CWE-269 Improper Privilege Management weakness

References