CVE-2020-12521
Medium
Description
On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.
SeverityMedium
CVSS6.5
Exploit probability—
ProductPhoenixcontact Plcnext Firmware
PublishedDec 17, 2020
First seenDec 17, 2020
Weakness typeCWE-20Improper input validation
How to fix
Update
- phoenixcontact plcnext_firmware2021.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phoenixcontact plcnext_firmware | v < 2021.0 | 2021.0 |
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