CVE-2019-6816 Code injection in Modicon Quantum - all firmware versions

Critical 9.1 Published Updated

Attackers can inject code via Modbus to modify firmware and cause denial of service on Modicon Quantum PLCs.

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-2019-6816?

CVE-2019-6816 is a critical code injection vulnerability in Modicon Quantum - all firmware versions, published on 22 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Modicon Quantum all firmware versions, a CWE-94: Code Injection vulnerability could cause an unauthorized firmware modification with possible Denial of Service when using Modbus protocol.

Weakness: CWE-94

Which versions are affected by CVE-2019-6816?

It affects 1 product.

Products include Schneider-Electric Modicon Quantum Firmware.

How do I fix CVE-2019-6816?

No fix has been published for CVE-2019-6816 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-2019-6816 being exploited?

There is no known exploitation of CVE-2019-6816 in the wild and no public exploit code.

Sources

Also known as GHSA-cc47-9r7p-x4hv.

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