CVE-2026-40573
NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly
- Risk score
- 52/100
- CVSS
- 8.6 v3.1
- Published
- 30 Oct 2026
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What to know
- What it is
- 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. Th…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.25 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.6 high
References
Original description
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.
Last activity 30 Oct 2026. Patch Forecast updates every hour.