Security readout for executives and security teams
Plain-English summary
CVE-2026-22553 is a critical remote code execution risk in InSAT MasterSCADA BUK-TS. A vulnerable field in the MMadmServ web interface can allow operating system commands to run remotely. For organizations using this product in OT environments, exposed management interfaces should be treated as urgent risk.
Executive priority
Treat as urgent for any organization using InSAT MasterSCADA BUK-TS, especially in operational technology. Prioritize exposure reduction while awaiting or applying official vendor guidance.
Technical view
All versions of InSAT MasterSCADA BUK-TS are reported affected by CWE-78 OS command injection in the MMadmServ web interface. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, and no user interaction. Successful exploitation could impact confidentiality, integrity, and availability.
Likely exposure
Exposure is likely limited to organizations running InSAT MasterSCADA BUK-TS. Risk is highest where the MMadmServ web interface is reachable from untrusted networks, flat OT networks, or remote access paths.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The vulnerability is still high-risk because the CVSS vector indicates unauthenticated network exploitation without user interaction.
Researcher notes
Key evidence: CWE-78, CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, affected product listed as all versions of InSAT MasterSCADA BUK-TS. Patch status and active exploitation are not established in the provided sources.
Mitigation direction
- Check CISA advisory ICSA-26-055-01 and InSAT guidance for official fixes or workarounds.
- Identify and prioritize all MasterSCADA BUK-TS deployments.
- Restrict MMadmServ access to trusted administrative networks only.
- Remove any direct internet exposure for the affected interface.
- Increase monitoring for suspicious access to MMadmServ.
Validation and detection
- Confirm whether MasterSCADA BUK-TS is deployed in your environment.
- Determine whether the MMadmServ web interface is enabled.
- Review network paths that can reach MMadmServ.
- Check whether any instance is internet-accessible.
- Track vendor and CISA updates for patch or mitigation status.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-22553 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.