CVE-2019-6851 Information disclosure in Modicon M580, Modicon M340, Modicon Premium , Modicon Quantum (all firmware versions)

High 7.5 Published 29 Oct 2019 Updated 4 Aug 2024

Attackers can disclose controller information via TFTP on Schneider Electric Modicon PLCs, requiring firmware updates to mitigate.

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-2019-6851?

CVE-2019-6851 is a high-severity vulnerability in Modicon M580, Modicon M340, Modicon Premium , Modicon Quantum (all firmware versions), published on 29 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A CWE-538: File and Directory Information Exposure vulnerability exists in Modicon M580, Modicon M340, Modicon Premium , Modicon Quantum (all firmware versions), which could cause the disclosure of information from the controller when using TFTP protocol.

Weakness: CWE-200, CWE-538

Which versions are affected by CVE-2019-6851?

It affects 23 products.

Products include Schneider-Electric Modicon M340 Firmware, Schneider-Electric Modicon M580 Firmware, Schneider-Electric Tsxmcpc002m Firmware, Schneider-Electric Tsxmcpc512k Firmware, Schneider-Electric Tsxmfp0128p2 Firmware, Schneider-Electric Tsxmfp064p2 Firmware and 17 more.

How do I fix CVE-2019-6851?

No fix has been published for CVE-2019-6851 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-6851 being exploited?

There is no known exploitation of CVE-2019-6851 in the wild and no public exploit code.

Sources

Also known as GHSA-6j7h-88x9-v95m.