CVE-2019-6845 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 intercept sensitive information during application transfers to Modicon PLCs via Modbus TCP due to cleartext transmission.

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-2019-6845?

CVE-2019-6845 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-319: Cleartext Transmission of Sensitive Information vulnerability exists in Modicon M580, Modicon M340, Modicon Premium , Modicon Quantum (all firmware versions), which could cause the disclosure of information when transferring applications to the controller using Modbus TCP protocol.

Weakness: CWE-319

Which versions are affected by CVE-2019-6845?

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-2019-6845?

No fix has been published for CVE-2019-6845 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-6845 being exploited?

There is no known exploitation of CVE-2019-6845 in the wild and no public exploit code.

Sources

Also known as GHSA-m7mw-4chh-hqmq.