CVE-2020-12499PHOENIX CONTACT PLCnext Engineer version 2020.3.1 and earlier: Improper path sanitation vulnerability.
- 8.2HighCVSS base score
- 0.40%Exploitation in 30 daysEPSS · top 65% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In PHOENIX CONTACT PLCnext Engineer version 2020.3.1 and earlier an improper path sanitation vulnerability exists on import of project files.
Timeline
ID reserved
By CERTVDE
- 3 months later
· 3 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CERTVDECNA (assigner) | 3.1 | High8.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.2.
Affected products
PHOENIX CONTACT · PLCnext Engineer
- affected unspecified – ≤ 2020.3.1
What to do
Solution: Temporary Fix / Mitigation: We strongly recommend customers to exchange project files only using secure file exchange services. Project files should not be exchanged via unencrypted email. Users should avoid importing project files from unknown source and exchange or store project files together with a checksum to ensure their integrity.
Solution: Remediation: Phoenix Contact strongly recommends updating to the latest version PLCnext Enineer 2020.6 or higher, which fixes this vulnerability.
References
References1
- https://cert.vde.com/en-us/advisories/vde-2020-025 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-4801 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-12499)Record last updated .