What is CVE-2021-27505?

CVE-2021-27505 is a high-severity vulnerability in Myscada Mypro, classified under CWE-548. CVSS score: 7.5/10. Published 2022-05-13.

How severe is CVE-2021-27505?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Myscada Mypro

CVE-2021-27505

mySCADA myPRO versions prior to 8.20.0 does not restrict unauthorized read access to sensitive directory listing information.

Published 2022-05-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.5th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

Myscada Mypro — versions unspecified

Weakness classification (CWE)

CWE-548

References

www.cisa.gov/uscert/ics/advisories/icsa-21-217-03 (US Government Resource, Third Party Advisory)
www.myscada.org/version-8-20-0-released-security-update (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-27505?: CVE-2021-27505 is a high-severity vulnerability in Myscada Mypro, classified under CWE-548. CVSS score: 7.5/10. Published 2022-05-13.
How severe is CVE-2021-27505?: High severity. CVSS v3 base score is 7.5 out of 10.