PatchTheCVECVE-2026-33921: The Windows installer deployed Npcap leaving its access restriction option at the insecure default value, so t
19
Routine
MEDIUM 5.2
CVE-2026-33921 is a medium-severity flaw (CVSS 5.2) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 sen
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 5.2 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 97%) |
| CISA exploited list | No |
| Weakness | CWE-1188 |
| Published | 2026-08-11 |
| Last modified | 2026-10-23 |
Publisher (CNA): Nozomi Networks Inc.
Timeline
- Published CVE record published
- Updated Record last modified
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.