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CVE-2026-40572— NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)

Quick assessment

Affected

MinecAnton209 NovumOS

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NovumOS是MinecAnton209个人开发者的一个32位保护模式操作系统。 NovumOS 0.24之前版本存在安全漏洞，该漏洞源于系统调用15允许Ring 3用户模式进程映射任意虚拟地址范围到其地址空间，且未验证禁止区域，可能导致本地攻击者修改内核中断处理程序，进而实现权限提升。

CVSS 9.0 · Critical EPSS 0.21% · P12 Updated Apr 21, 2026

Possible ATT&CK Techniques 2 AI

T1055 · Process Injection T1068 · Exploitation for Privilege Escalation

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I. Basic Information for CVE-2026-40572

Vulnerability Information

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Vulnerability Title

NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

特权管理不恰当

Source: CVE Program / CVE List V5

Vulnerability Title

NovumOS 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
MinecAnton209	NovumOS	< 0.24	-

II. Public POCs for CVE-2026-40572

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-40572

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Vendor Advisories for CVE-2026-40572 (1)

🔗 Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange) · Advisory · MinecAnton209/NovumOS · GitHub Read full article x_refsource_CONFIRM

Other References for CVE-2026-40572 (1)

🔗 Release v0.24: Ironclad (Security & Watchdog) · MinecAnton209/NovumOS · GitHub Read full article x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-40572

IV. Related Vulnerabilities

Same product: NovumOS

Same vendor: MinecAnton209

Same weakness: CWE-269