CVE-2026-40573 NovumOS - Privilege Escalation

NovumOS prior to 0.25-beta.1 contains a privilege escalation caused by the Nova interpreter running in Ring 0 without isolation, letting local users execute code with kernel privileges via malicious .nv scripts.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
30 October 2026
Updated
1 November 2026
Weakness
CWE-250

Vendor fix

Update to version 0.25-beta.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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