Scada-LTS ScadaLTS 2.8.1 Scripting Sandbox DataSourceEditDwr.validateScript improper authorization

Summaryinfo

A vulnerability, which was classified as very critical, was found in Scada-LTS ScadaLTS 2.8.1. Affected by this vulnerability is the function DataSourceEditDwr.validateScript of the component Scripting Sandbox. Executing a manipulation can lead to improper authorization. This vulnerability appears as CVE-2026-84858. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Scada-LTS ScadaLTS 2.8.1. It has been declared as very critical. This vulnerability affects the function DataSourceEditDwr.validateScript of the component Scripting Sandbox. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authenticated Remote Code Execution via Scripting Sandbox Bypass The DWR "DataSourceEditDwr" class exposes the "validateScript" method that compiles and executes attacker-supplied JavaScript via the Rhino scripting engine. There are no authorization checks on this method and so it is possible for an attacker with access to a low privilege user to abuse this flaw by leveraging the DWR routing bypass.

The advisory is shared for download at tenable.com. This vulnerability was named CVE-2026-84858 since 09/02/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/16/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• SCADA Software

Vendor

• Scada-LTS

Name

• ScadaLTS

Version

• 2.8.1

CPE 2.3info

• 🔒

CPE 2.2info

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