What is CVE-2026-33921?

CVE-2026-33921 is a medium-severity vulnerability in Nozomi Networks Arc, classified under Initialization of a Resource with an Insecure Default. CVSS score: 5.2/10. Published 2026-08-11.

How severe is CVE-2026-33921?

Medium severity. CVSS v3 base score is 5.2 out of 10.

RCE in Nozomi Networks Arc

CVE-2026-33921

The Windows installer deployed Npcap leaving its access restriction option at the insecure default value, so the driver was accessible to every local user of the host instead of being restricted to administrators only. A local user without…

CVSS v3 metric

CVSS v3 base score 5.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Nozomi Networks Arc — versions 0

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

prodsec@nozominetworks.com

Frequently asked questions

What is CVE-2026-33921?: CVE-2026-33921 is a medium-severity vulnerability in Nozomi Networks Arc, classified under Initialization of a Resource with an Insecure Default. CVSS score: 5.2/10. Published 2026-08-11.
How severe is CVE-2026-33921?: Medium severity. CVSS v3 base score is 5.2 out of 10.