CVE-2021-2456

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 81% (99th percentile of EPSS-scored CVEs). 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
Elevated
9.8EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 81%
CISA-KEV: Not listedEPSS PROB: 81%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

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

Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Fusion Middleware (component: Analytics Web General). The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Business Intelligence Enterprise Edition. Successful attacks of this vulnerability can result in takeover of Oracle Business Intelligence Enterprise Edition. 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
9.8CRITICALmedium confidence
EG Risk
92
EG Risk 92/100CISA SSVC

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%
Exploitation81% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
81%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 21, 2021

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Oct 4, 2026
No patch confirmed yet.
generic

ZDI-21-885 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-21-885/

Data Freshness Timeline

(refreshed 4× 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. 2026-10-03 14:22 UTCEPSS rescore
  2. 2026-10-03 14:22 UTCEPSS rescore
  3. 2026-09-30 15:31 UTCEG score recompute
  4. 2026-09-30 15:00 UTCEPSS rescore
  5. 2026-09-28 13:47 UTCEPSS rescore
  6. 2026-09-27 13:41 UTCEPSS rescore
  7. 2026-09-26 15:54 UTCEPSS rescore
  8. 2026-09-26 15:54 UTCEPSS rescore
  9. 2026-09-24 14:00 UTCEPSS rescore
  10. 2026-09-23 13:44 UTCEPSS rescore
  11. 2026-09-21 20:28 UTCEPSS rescore
  12. 2026-09-18 19:23 UTCEPSS rescore
  13. 2026-09-17 19:23 UTCEPSS rescore
  14. 2026-09-17 19:23 UTCEPSS rescore
  15. 2026-09-16 14:05 UTCEPSS rescore
  16. 2026-09-12 14:57 UTCEPSS rescore
  17. 2026-09-06 13:44 UTCEPSS rescore
  18. 2026-09-05 15:25 UTCEPSS rescore
  19. 2026-09-04 13:57 UTCEPSS rescore
  20. 2026-09-01 13:50 UTCEPSS rescore
  21. 2026-08-30 19:14 UTCEPSS rescore
  22. 2026-08-28 21:37 UTCEPSS rescore
  23. 2026-08-26 14:42 UTCEPSS rescore
  24. 2026-08-25 13:45 UTCEPSS rescore
  25. 2026-08-24 14:12 UTCEPSS rescore
Show 67 more
  1. 2026-08-20 22:52 UTCEPSS rescore
  2. 2026-08-19 17:01 UTCEPSS rescore
  3. 2026-08-18 13:45 UTCEPSS rescore
  4. 2026-08-16 02:11 UTCEPSS rescore
  5. 2026-08-16 02:11 UTCEPSS rescore
  6. 2026-08-15 01:27 UTCEPSS rescore
  7. 2026-08-12 13:47 UTCEPSS rescore
  8. 2026-08-05 19:14 UTCEPSS rescore
  9. 2026-07-26 14:52 UTCEPSS rescore
  10. 2026-07-26 14:52 UTCEPSS rescore
  11. 2026-07-24 14:15 UTCEPSS rescore
  12. 2026-07-23 14:16 UTCEPSS rescore
  13. 2026-07-23 01:58 UTCEG score recompute
  14. 2026-07-22 22:44 UTCEG score recompute
  15. 2026-07-22 14:06 UTCEPSS rescore
  16. 2026-07-22 14:06 UTCEPSS rescore
  17. 2026-07-21 15:22 UTCEPSS rescore
  18. 2026-07-21 15:22 UTCEPSS rescore
  19. 2026-07-20 17:05 UTCEPSS rescore
  20. 2026-07-16 17:00 UTCEPSS rescore
  21. 2026-07-15 16:55 UTCEPSS rescore
  22. 2026-07-15 16:55 UTCEPSS rescore
  23. 2026-07-13 22:27 UTCEPSS rescore
  24. 2026-07-13 22:27 UTCEPSS rescore
  25. 2026-07-09 19:07 UTCEPSS rescore
  26. 2026-07-07 13:43 UTCEPSS rescore
  27. 2026-07-06 16:25 UTCEPSS rescore
  28. 2026-07-06 16:25 UTCEPSS rescore
  29. 2026-07-05 02:28 UTCEPSS rescore
  30. 2026-07-02 16:57 UTCEPSS rescore
  31. 2026-06-30 23:20 UTCEPSS rescore
  32. 2026-06-30 23:20 UTCEPSS rescore
  33. 2026-06-25 13:48 UTCEPSS rescore
  34. 2026-06-25 13:48 UTCEPSS rescore
  35. 2026-06-23 21:31 UTCEPSS rescore
  36. 2026-06-23 21:31 UTCEPSS rescore
  37. 2026-06-21 01:58 UTCEPSS rescore
  38. 2026-06-21 01:58 UTCEPSS rescore
  39. 2026-06-17 17:51 UTCEPSS rescore
  40. 2026-06-15 17:46 UTCEPSS rescore
  41. 2026-06-13 22:58 UTCEPSS rescore
  42. 2026-06-13 22:58 UTCEPSS rescore
  43. 2026-06-12 23:10 UTCEPSS rescore
  44. 2026-06-11 13:58 UTCEPSS rescore
  45. 2026-06-10 22:16 UTCEPSS rescore
  46. 2026-06-10 13:20 UTCEPSS rescore
  47. 2026-06-08 14:15 UTCEPSS rescore
  48. 2026-06-07 15:23 UTCEPSS rescore
  49. 2026-06-07 15:23 UTCEPSS rescore
  50. 2026-06-05 22:45 UTCEPSS rescore
  51. 2026-06-05 22:45 UTCEPSS rescore
  52. 2026-06-05 06:09 UTCEPSS rescore
  53. 2026-06-05 06:09 UTCEPSS rescore
  54. 2026-06-02 20:11 UTCEPSS rescore
  55. 2026-06-02 20:11 UTCEPSS rescore
  56. 2026-06-02 20:11 UTCEPSS rescore
  57. 2026-06-01 13:50 UTCEPSS rescore
  58. 2026-06-01 13:50 UTCEPSS rescore
  59. 2026-05-31 00:15 UTCEPSS rescore
  60. 2026-05-29 13:42 UTCEPSS rescore
  61. 2026-05-28 13:43 UTCEPSS rescore
  62. 2026-05-28 13:43 UTCEPSS rescore
  63. 2026-05-26 13:18 UTCEG score recompute
  64. 2026-05-26 13:18 UTCGHSA enrichment
  65. 2026-05-26 07:17 UTCEPSS rescore
  66. 2026-05-26 07:17 UTCEPSS rescore
  67. 2026-05-25 21:16 UTCOSV refresh

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCpeterjson31337/CVE-2021-2456
    First seen Sep 16, 2021

    CVE-2021-2456

    Open source ↗

Frequently asked(5)

What is CVE-2021-2456?
CVE-2021-2456 is a critical vulnerability published on July 21, 2021. Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Fusion Middleware (component: Analytics Web General). The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to…
When was CVE-2021-2456 disclosed?
CVE-2021-2456 was first published on July 21, 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-2021-2456 actively exploited?
CVE-2021-2456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-2456?
CVE-2021-2456 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-2456?
No fix for CVE-2021-2456 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2021-2456

Explore →

Is Your Infrastructure Affected by CVE-2021-2456?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs