HIGHCVSS v3.1 8.6Vulnerability
CVE-2026-40573
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-10-31T00:12:10.805837+00:00
- Cvss severity
- HIGH
- Cvss score
- 8.6
- Retrieved at
- 2026-10-31T00:13:33+00:00
- Score
- 8.6
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-40573
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- First seen by Signal
- 2026-10-31T00:13:33+00:00
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- Published at
- 2026-10-30T21:16:53.670
- Last modified
- 2026-10-30T21:16:53.670
Related Entities (1)
HAS_WEAKNESS (1)
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