CVE-2023-31409 Denial of service in SICK FTMG-ESD15AXX AIR FLOW SENSOR

Medium 5.3 Published 15 May 2023 Updated 1 Jun 2026

Remote attackers can cause denial of service on SICK air flow sensors via Slowloris-style HTTP attacks, affecting industrial availability.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-31409?

CVE-2023-31409 is a medium-severity denial of service vulnerability in SICK FTMG-ESD15AXX AIR FLOW SENSOR, published on 15 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Uncontrolled Resource Consumption in SICK FTMg AIR FLOW SENSOR with Partnumbers 1100214, 1100215, 1100216, 1120114, 1120116, 1122524, 1122526 allows an remote attacker to influence the availability of the webserver by invocing a Slowloris style attack via HTTP requests.

Weakness: CWE-400

Which versions are affected by CVE-2023-31409?

It affects 7 products.

Products include Sick Ftmg-Esd15axx Firmware, Sick Ftmg-Esd20axx Firmware, Sick Ftmg-Esd25axx Firmware, Sick Ftmg-Esn40sxx Firmware, Sick Ftmg-Esn50sxx Firmware, Sick Ftmg-Esr40sxx Firmware and 1 more.

How do I fix CVE-2023-31409?

No fix has been published for CVE-2023-31409 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-31409 being exploited?

There is no known exploitation of CVE-2023-31409 in the wild and no public exploit code.

Sources

Also known as GHSA-7c4w-rgx7-j66j.