What is CVE-2020-16258?

CVE-2020-16258 is a high-severity vulnerability in Winstonprivacy Winston, classified under Use of Hard-coded Credentials. CVSS score: 7.1/10. Published 2020-10-28.

How severe is CVE-2020-16258?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Winstonprivacy Winston

CVE-2020-16258

Winston 1.5.4 devices make use of a Monit service (not managed during the normal user process) which is configured with default credentials.

Published 2020-10-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.9% 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

Winstonprivacy Winston
Winstonprivacy Winston Firmware — versions 1.5.4

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

winstonprivacy.com/ (Product)
labs.bishopfox.com/advisories/winston-privacy-version-1.5.4 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-16258?: CVE-2020-16258 is a high-severity vulnerability in Winstonprivacy Winston, classified under Use of Hard-coded Credentials. CVSS score: 7.1/10. Published 2020-10-28.
How severe is CVE-2020-16258?: High severity. CVSS v3 base score is 7.1 out of 10.