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CVE-2021-34570
HIGH
CVSS: 7.5
Published: 2021-09-27
Modified: 2026-06-17
Description
Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.
Affected Platforms
Phoenixcontact Rfc 4072SPhoenixcontact Axc F 2152 StarterkitPhoenixcontact Axc F 2152 FirmwarePhoenixcontact Axc F 1152 FirmwarePhoenixcontact Axc F 2152 Starterkit FirmwarePhoenixcontact Axc F 1152Phoenixcontact Rfc 4072S FirmwarePhoenixcontact Axc F 3152Phoenixcontact Axc F 2152Phoenixcontact Plcnext Technology Starterkit Firmware