Is there a public exploit for CVE-2026-40573?

No public exploit for CVE-2026-40573 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-40573?

CVE-2026-40573 scores CVSS 8.6 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.13%.

What does CVE-2026-40573 affect?

CVE-2026-40573 affects MinecAnton209 NovumOS.

8.6 High

NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly.

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.

Assessment

CVSS: 8.6 (v3.1)
Severity: High
EPSS: 0.13% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 30 October 2026
Last updated: 5 November 2026
Affected: MinecAnton209 · NovumOS
Assigner: GitHub_M

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

At the source

EUVD (ENISA)

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

Submit a proof of concept

Only for publicly disclosed vulnerabilities, and only material from testing you were authorised to perform. This platform does not buy, sell, or broker exploits — see earning from vulnerability research for legitimate bounty programs. Submissions are reviewed before they appear. Text only; do not include live credentials, personal data, or anything targeting systems you are not permitted to test.

Title *

Proof of concept *

Write-up (optional)

Affected versions (optional)

Name or handle (optional)

References (optional, one URL per line)

Licence for your contribution *

Private contact (optional, never shown)

Before you submit * This vulnerability is already publicly disclosed (it has a published CVE). This material comes only from testing I was authorised to perform. I have the legal right to publish this content and am not breaching any agreement by doing so. It contains no live credentials, personal data, or anything targeting systems I am not authorised to test. I understand it will be reviewed before it appears publicly and may be rejected. I agree to the submission terms.

What is 3 + 2? *

Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2026-40573