CVE-2026-84858 Scada-LTS Authenticated Remote Code Execution via Scripting Sandbox Bypass
Authenticated attackers can execute arbitrary code by bypassing the scripting sandbox in Scada-LTS via an exposed DWR method.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84858?
CVE-2026-84858 is a high-severity code injection vulnerability in Scada-LTS, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-94
Which versions are affected by CVE-2026-84858?
How do I fix CVE-2026-84858?
No fix has been published for CVE-2026-84858 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-84858 being exploited?
There is no known exploitation of CVE-2026-84858 in the wild and no public exploit code.
Sources
Also known as GHSA-mrrr-7mg7-864j.