CVE-2026-19656 — CRITICAL (9.9)

Vulnerability Description

ScadaLTS 2.7.8.1 exposes a server-side method that lacks authorization checks, allowing any authenticated user (including one holding only low-privilege, read-only permissions) to execute arbitrary operating system commands on the host. Successful exploitation results in code execution in the context of the ScadaLTS server process (root), leading to full compromise of the underlying system.

CVSS Score

9.9

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Scada-Lts	Scada-Lts	2.7.8.1

Related Weaknesses (CWE)

CWE-862

References

https://www.tenable.com/security/research/tra-2026-55Third Party Advisory

FAQ

What is CVE-2026-19656?

CVE-2026-19656 is a vulnerability with a CVSS score of 9.9 (CRITICAL). ScadaLTS 2.7.8.1 exposes a server-side method that lacks authorization checks, allowing any authenticated user (including one holding only low-privilege, read-only permissions) to execute arbitrary op...

How severe is CVE-2026-19656?

CVE-2026-19656 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-19656?

Check the references section above for vendor advisories and patch information. Affected products include: Scada-Lts Scada-Lts.