CVE-2026-33921 (GCVE-0-2026-33921)

Vulnerability from cvelistv5 – Published: 2026-08-11 09:48 – Updated: 2026-08-11 09:48
VLAI
Title
Npcap driver installed without administrator-only access restriction on Windows in Arc before v2.7.0
Summary
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 administrative privileges could use the Npcap driver to capture the traffic reaching the host, which discloses information belonging both to the host and to other systems on the same network segment, and to send arbitrary raw packets on that segment.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
5.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-1188 - Initialization of a resource with an insecure default
Assigner
References
Impacted products
Vendor Product Version
Nozomi Networks Arc Affected: 0 , < 2.7.0 (semver)
Create a notification for this product.
Date Public
2026-08-11 07:00
Credits
This issue was found by Stefano Balzarotti of Nozomi Networks during an internal investigation.
Show details on NVD website
To clipboard 

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}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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