CVE-2020-14756

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 75%
CISA-KEV: Not listedEPSS PROB: 75%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core Components). Supported versions that are affected are 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
89(Track)
EG Risk 89/100SSVC: 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
Severity98% × 45%
Exploitation75% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
75%
EPSS %ILE
99%
KEV
Not listed

Published

January 20, 2021

Last Modified

November 21, 2024

References (4)

Data Freshness Timeline

(refreshed 5× in last 7d / 17× 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.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
  4. 2026-08-16 02:11 UTCEPSS rescore
  5. 2026-08-15 01:26 UTCEPSS rescore
  6. 2026-08-12 13:47 UTCEPSS rescore
  7. 2026-08-06 13:43 UTCEPSS rescore
  8. 2026-08-04 10:34 UTCEPSS rescore
  9. 2026-08-03 10:32 UTCEPSS rescore
  10. 2026-08-02 02:23 UTCEPSS rescore
  11. 2026-07-30 16:24 UTCEPSS rescore
  12. 2026-07-26 14:51 UTCEPSS rescore
  13. 2026-07-24 14:14 UTCEPSS rescore
  14. 2026-07-23 14:15 UTCEPSS rescore
  15. 2026-07-23 14:15 UTCEPSS rescore
  16. 2026-07-23 01:49 UTCEG score recompute
  17. 2026-07-22 22:34 UTCEG score recompute
  18. 2026-07-22 14:05 UTCEPSS rescore
  19. 2026-07-21 15:22 UTCEPSS rescore
  20. 2026-07-21 15:22 UTCEPSS rescore
  21. 2026-07-20 17:04 UTCEPSS rescore
  22. 2026-07-16 16:59 UTCEPSS rescore
  23. 2026-07-16 16:59 UTCEPSS rescore
  24. 2026-07-15 16:55 UTCEPSS rescore
  25. 2026-07-12 05:44 UTCEPSS rescore
Show 48 more
  1. 2026-07-09 19:06 UTCEPSS rescore
  2. 2026-07-08 15:11 UTCEPSS rescore
  3. 2026-07-06 16:25 UTCEPSS rescore
  4. 2026-07-06 16:25 UTCEPSS rescore
  5. 2026-07-04 06:28 UTCEPSS rescore
  6. 2026-07-01 15:03 UTCEPSS rescore
  7. 2026-07-01 15:03 UTCEPSS rescore
  8. 2026-06-30 23:20 UTCEPSS rescore
  9. 2026-06-30 23:20 UTCEPSS rescore
  10. 2026-06-28 14:05 UTCEPSS rescore
  11. 2026-06-27 03:06 UTCEPSS rescore
  12. 2026-06-25 13:47 UTCEPSS rescore
  13. 2026-06-25 13:47 UTCEPSS rescore
  14. 2026-06-24 14:03 UTCEPSS rescore
  15. 2026-06-24 14:03 UTCEPSS rescore
  16. 2026-06-23 21:31 UTCEPSS rescore
  17. 2026-06-23 21:31 UTCEPSS rescore
  18. 2026-06-21 01:57 UTCEPSS rescore
  19. 2026-06-21 01:57 UTCEPSS rescore
  20. 2026-06-18 17:50 UTCEPSS rescore
  21. 2026-06-18 17:50 UTCEPSS rescore
  22. 2026-06-16 17:50 UTCEPSS rescore
  23. 2026-06-16 17:50 UTCEPSS rescore
  24. 2026-06-15 17:46 UTCEPSS rescore
  25. 2026-06-14 23:15 UTCEPSS rescore
  26. 2026-06-14 23:15 UTCEPSS rescore
  27. 2026-06-12 23:09 UTCEPSS rescore
  28. 2026-06-10 22:16 UTCEPSS rescore
  29. 2026-06-10 22:16 UTCEPSS rescore
  30. 2026-06-06 13:45 UTCEPSS rescore
  31. 2026-06-06 13:45 UTCEPSS rescore
  32. 2026-06-06 13:45 UTCEPSS rescore
  33. 2026-06-05 22:45 UTCEPSS rescore
  34. 2026-06-05 22:45 UTCEPSS rescore
  35. 2026-06-05 06:08 UTCEPSS rescore
  36. 2026-06-04 13:10 UTCEPSS rescore
  37. 2026-06-04 13:10 UTCEPSS rescore
  38. 2026-06-02 20:11 UTCEPSS rescore
  39. 2026-06-02 20:11 UTCEPSS rescore
  40. 2026-06-01 13:50 UTCEPSS rescore
  41. 2026-05-31 00:15 UTCEPSS rescore
  42. 2026-05-31 00:14 UTCEPSS rescore
  43. 2026-05-28 13:43 UTCEPSS rescore
  44. 2026-05-28 13:43 UTCEPSS rescore
  45. 2026-05-26 21:58 UTCEG score recompute
  46. 2026-05-26 21:58 UTCGHSA enrichment
  47. 2026-05-26 07:17 UTCEPSS rescore
  48. 2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsomatrasss/weblogic2021
    First seen Feb 4, 2021

    CVE-2021-1994、CVE-2021-2047、CVE-2021-2064、CVE-2021-2108、CVE-2021-2075、CVE-2019-17195、CVE-2020-14756、CVE-2021-2109

    Open source ↗
  • GitHub PoCY4er/CVE-2020-14756
    First seen Jan 27, 2021

    WebLogic T3/IIOP RCE ExternalizableHelper.class of coherence.jar

    Open source ↗

Frequently asked(5)

What is CVE-2020-14756?
CVE-2020-14756 is a critical vulnerability published on January 20, 2021. Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core Components). Supported versions that are affected are 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP,…
When was CVE-2020-14756 disclosed?
CVE-2020-14756 was first published in the National Vulnerability Database on January 20, 2021, 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-2020-14756 actively exploited?
CVE-2020-14756 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75% probability of exploitation in the next 30 days, which ranks it in the top 0.5% of all scored CVEs.
What is the CVSS score of CVE-2020-14756?
CVE-2020-14756 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-14756?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-14756, 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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