What is CVE-2021-27194?

CVE-2021-27194 is a high-severity vulnerability in Microsoft Windows, classified under Cleartext Transmission of Sensitive Information. CVSS score: 8.8/10. Published 2021-03-25.

How severe is CVE-2021-27194?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Microsoft Windows

CVE-2021-27194

Cleartext transmission of sensitive information in Netop Vision Pro up to and including 9.7.1 allows a remote unauthenticated attacker to gather credentials including Windows login usernames and passwords.

Published 2021-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

www.mcafee.com/blogs/other-blogs/mcafee-labs/netop-vision-pro-distance-learning… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-27194?: CVE-2021-27194 is a high-severity vulnerability in Microsoft Windows, classified under Cleartext Transmission of Sensitive Information. CVSS score: 8.8/10. Published 2021-03-25.
How severe is CVE-2021-27194?: High severity. CVSS v3 base score is 8.8 out of 10.