CVE-2026-111853 Command injection in 3 Series MDO
Remote attackers can execute arbitrary OS commands with elevated privileges on Tektronix 3 Series MDO devices via the SCPI command handler.
- 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-2026-111853?
CVE-2026-111853 is a high-severity command injection vulnerability in Tektronix 3 Series MDO, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered on Tektronix 3 Series MDO devices before 1.21.1. An OS command injection vulnerability exists in the FILESystem:MOUNT:DRIve SCPI command handler. Insufficient neutralization of user-supplied input allows remote attackers to execute arbitrary operating system commands with elevated privileges.
Weakness: CWE-78
Which versions are affected by CVE-2026-111853?
How do I fix CVE-2026-111853?
No fix has been published for CVE-2026-111853 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-111853 being exploited?
There is no known exploitation of CVE-2026-111853 in the wild and no public exploit code.
Sources
Also known as GHSA-r8hj-gr47-x24w.