Improper check for unusual or exceptional conditions in Schneider Electric products - CVE-2019-6819
Published: October 2, 2019
Vulnerability identifier: #VU21477
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-6819
CWE-ID:
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service (DoS) condition.
The vulnerability exits due to the affected software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software. A remote attacker can send a specially crafted Modbus frame to the affected device and cause a denial of service condition.
Affected software
Modicon Premium
Modicon Quantum
Modicon M340
Modicon M580
Modicon Quantum
Modicon M340
Modicon M580
How to mitigate CVE-2019-6819
Install updates from vendor's website.
Modicon M340 - update to 3.01
Modicon M580 - update to 2.80
Modicon M580 - update to 2.80