CVE-2020-12517

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.1%, top 38% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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).

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

December 17, 2020

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

Advisories

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 124 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
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  1. 2026-07-23 14:15 UTCEPSS rescore
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  3. 2026-07-23 01:48 UTCEG score recompute
  4. 2026-07-22 22:33 UTCEG score recompute
  5. 2026-07-22 14:05 UTCEPSS rescore
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  8. 2026-07-20 17:04 UTCEPSS rescore
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  20. 2026-07-12 05:44 UTCEPSS rescore
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  22. 2026-07-09 19:06 UTCEPSS rescore
  23. 2026-07-08 15:11 UTCEPSS rescore
  24. 2026-07-07 13:43 UTCEPSS rescore
  25. 2026-07-06 16:25 UTCEPSS rescore
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  44. 2026-06-23 21:31 UTCEPSS rescore
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  46. 2026-06-22 14:23 UTCEPSS rescore
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  48. 2026-06-21 14:54 UTCEPSS rescore
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  50. 2026-06-21 01:57 UTCEPSS rescore
  51. 2026-06-21 01:57 UTCEPSS rescore
  52. 2026-06-19 19:23 UTCEPSS rescore
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  54. 2026-06-18 17:50 UTCEPSS rescore
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  72. 2026-06-07 15:23 UTCEPSS rescore
  73. 2026-06-07 15:23 UTCEPSS rescore
  74. 2026-06-06 13:45 UTCEPSS rescore
  75. 2026-06-06 13:45 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2020-12517?
CVE-2020-12517 is a high vulnerability published on December 17, 2020. 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).
When was CVE-2020-12517 disclosed?
CVE-2020-12517 was first published in the National Vulnerability Database on December 17, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-12517 actively exploited?
CVE-2020-12517 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 36.6% of all scored CVEs.
What is the CVSS score of CVE-2020-12517?
CVE-2020-12517 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2020-12517?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-12517, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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