CVE-2018-7843

A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service when reading memory blocks with an invalid data size or with an invalid data offset in the controller over Modbus...

CVE-2018-7843

creationtimestamp| type| source ---|---|--- 2025-04-24 10:00:00+00:00| seen| https://www.cisa.gov/news-events/ics-advisories/icsa-25-114-01...

Schneider Electric Modicon Multiple Denial Of Service Vulnerabilities (CVE-2018-7843; CVE-2018-7852; CVE-2018-7853; CVE-2018-7854; CVE-2018-7855; CVE-2018-7856; CVE-2018-7857; CVE-2019-6807)

Multiple denial of service vulnerabilities exist in Schneider Electric Modicon. A remote unauthenticated attacker could send crafted UMAS command packets to cause denial of service conditions...

CVE-2018-7843

CVE-2018-7843 concerns Schneider Electric Modicon PLCs (M580, M340, Quantum, Premium) with a flaw in the UMAS memory block read path over Modbus. The public Talos analysis describes an out-of-bounds memory read in the MEMORY_BLOCK_READ function that can trigger a non-recoverable fault, potentiall...