CVE-2026-33921

mediumPriorität · verfolgen · 0OT-Risiko · erhöhtEPSS 0.001 · 3. PerzentilEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.13% (3rd) EPSS

CVSS 5.2 · medium

Is it mine?

3 products

Prüfe deine Angriffsfläche

Who says so?

3 sources

cnnvd · enisa_euvd · nozomi_psirt

EPSS · bewertet 2026-10-27

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.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

BehobenArcnozomi_psirt
Upgrade Arc to v2.7.0 or later.
MitigationArcnozomi_psirt
Reinstall Npcap on the affected host with the "Restrict Npcap driver's access to Administrators only" option enabled.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

5.2

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · low–medium · 1.1–5.2

v3.15.2mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Nsecondary · prodsec@nozominetworks.comAusnutzbarkeit 2 · Auswirkung 2.7

v3.15.2mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Nsecondary · Nozomi Networks PSIRT

v4.04.8mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:Nsecondary · ENISA EU

v4.04.8mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · prodsec@nozominetworks.com

v4.01.1lowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)