Cyber Resilience

CVE-2021-27505

High

Published: 13 May 2022

Published
13 May 2022
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0021 43.8th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-27505 is a high-severity Exposure of Information Through Directory Listing (CWE-548) vulnerability in Myscada Mypro. Its CVSS base score is 7.5 (High).

Operationally, ranked at the 43.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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

CWE(s)
CWE-548

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

myscada
mypro
≤ 8.20.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AU-13 Monitoring for Information Disclosure
addresses: CWE-548

Detects information exposure through directory listings as unauthorized disclosure.

SC-30 Concealment and Misdirection
addresses: CWE-548

Directory listings and resource enumeration can be suppressed or populated with misleading entries.

SC-38 Operations Security
addresses: CWE-548

Reduces exposure via directory listings or accessible files when OPSEC restricts visibility of key organizational resources.

References