CVE-2026-22553 — CRITICAL (9.8)

Vulnerability Description

All versions of InSAT MasterSCADA BUK-TS are susceptible to OS command injection through a field in its MMadmServ web interface. Malicious users that use the vulnerable endpoint are potentially able to cause remote code execution.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Insat	Masterscada	All versions

Related Weaknesses (CWE)

CWE-78

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-05Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-01US Government ResourceVDB Entry

FAQ

What is CVE-2026-22553?

CVE-2026-22553 is a vulnerability with a CVSS score of 9.8 (CRITICAL). All versions of InSAT MasterSCADA BUK-TS are susceptible to OS command injection through a field in its MMadmServ web interface. Malicious users that use the vulnerable endpoint are potentially able t...

How severe is CVE-2026-22553?

CVE-2026-22553 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-22553?

Check the references section above for vendor advisories and patch information. Affected products include: Insat Masterscada.