CVE-2020-12517 json
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).
published 2020-12-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4819
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
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).
Patch / fix
- Phoenix Contact AXC F 1152 (1151412) 2021.0 LTS
- Phoenix Contact AXC F 2152 (2404267) 2021.0 LTS
- Phoenix Contact AXC F 3152 (1069208) 2021.0 LTS
- Phoenix Contact RFC 4072S (1051328 2021.0 LTS
- Phoenix Contact AXC F 2152 Starterkit (1046568) 2021.0 LTS
- Phoenix Contact PLCnext Technology Starterkit (1188165) 2021.0 LTS
Exploit prediction
1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 6.0 | AV:N/AC:M/Au:S/C:P/I:P/A:P |
Affected products
- Phoenix Contact AXC F 1152 (1151412)
- Phoenix Contact AXC F 2152 (2404267)
- Phoenix Contact AXC F 3152 (1069208)
- Phoenix Contact RFC 4072S (1051328
- Phoenix Contact AXC F 2152 Starterkit (1046568)
- Phoenix Contact PLCnext Technology Starterkit (1188165)
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
cert.vde.com
/en-us/advisories/vde-2020-049
third-party-advisory
Sources
- CVE List CVE-2020-12517
- NVD CVE-2020-12517
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.