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TI-2026-26278 Aliases CVE-2026-33921GHSA-gwvc-2mf6-9jv4

Npcap driver installed without administrator-only access restriction on Windows in Arc before v2.7.0

Priority LOW 21CWE-1188Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00133 2nd percentileScored 2026-11-07
Fix Fixed Arc (Nozomi Networks): 2.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Nozomi NetworksArcbefore 2.7.02.7.0Patch availableCNA
  • Arc VendorNozomi Networks Affected before 2.7.0 Fixed in 2.7.0 Patch available CNA

Remediation

  • Fix · CNA Arc (Nozomi Networks) Fixed in 2.7.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Nozomi Networks Arc 2.7.0

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-26279 Path traversal in the Offline archives functionality of the local web interface in Arc before v2.7.0Priority LOW 31
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33921
  2. 2026-10-03 Alias added: GHSA-gwvc-2mf6-9jv4

References

Other 1

  • TI-2022-00470 Authenticated RCE on project configuration import in Guardian/CMC before 22.0.0 CVSS 4.0HIGH 8.6
  • TI-2026-24526 DoS through oversized audit log entries in Guardian/CMC before 26.2.0 CVSS 4.0HIGH 8.7
  • TI-2023-15926 DoS on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 CVSS 4.0HIGH 8.2
  • TI-2023-13657 SQL Injection on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 CVSS 4.0CRITICAL 9.2
  • TI-2024-00196 DoS on IDS parsing of malformed Radius packets in Guardian before 23.4.1 CVSS 4.0HIGH 8.2
  • TI-2021-08402 Authenticated command injection when changing date settings or hostname in Guardian/CMC before 20.0.7.4 CVSS 4.0HIGH 8.6
See all 64 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences