MinecAnton209 NovumOS up to 0.25-beta.0 VM initialization zig/nova/vm.zig

Summaryinfo

A vulnerability described as very critical has been identified in MinecAnton209 NovumOS up to 0.25-beta.0. Affected is an unknown function of the file zig/nova/vm.zig of the component VM initialization. Executing a manipulation can lead to initialization. This vulnerability is handled as CVE-2026-40573. It is possible to launch the attack on the local host. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in MinecAnton209 NovumOS up to 0.25-beta.0. It has been declared as very critical. This vulnerability affects an unknown code block of the file zig/nova/vm.zig of the component VM initialization. The manipulation with an unknown input leads to a initialization vulnerability. The CWE definition for the vulnerability is CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. Prior to version 0.25-beta.1, the `Nova` interpreter runs in Ring 0 with unrestricted kernel-memory access. Loading a malicious `.nv` script through the shell permits a local user to execute code with kernel privileges without security checks. The advisory identifies VM initialization in `zig/nova/vm.zig` as the affected component; script execution is not isolated in a restricted Ring 3 privilege domain. This issue is fixed in version 0.25-beta.1.

The advisory is available at github.com. This vulnerability was named CVE-2026-40573 since 04/14/2026. The exploitation appears to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/30/2026).

Upgrading to version 0.25-beta.1 eliminates this vulnerability.

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Productinfo

Vendor

• MinecAnton209

Name

• NovumOS

Version

• 0.25-beta

Website

• Product: https://github.com/MinecAnton209/NovumOS/

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