CVE-2020-12517

critical

Description

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an authenticated low privileged user could embed malicious Javascript code to gain admin rights when the admin user visits the vulnerable website (local privilege escalation).

References

https://cert.vde.com/en-us/advisories/vde-2020-049

Details

Source: Mitre, NVD

Published: 2020-12-17

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 9

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00347