CVE-2026-22553

9.3 criticalEPSS 1.6%

Critical (9.3) in insat masterscada. EPSS 1.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.3 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8 critical

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

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2026-02-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

insat:masterscada

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-01.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-01

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