CVE-2026-71063

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. The CNA's CVSS baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:oracle, epss, ghsa
Trending — 3 sources updated this week
9.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.6Exploit: None knownExposed 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 Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Portable Clusterware executes to compromise Portable Clusterware. While the vulnerability is in Portable Clusterware, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Portable Clusterware. CVSS 3.1 Base Score 9.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
43
EG Risk 43/100CISA 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (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

August 18, 2026

Last Modified

September 17, 2026

References (1)

Vendor Advisories for CVE-2026-71063(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 40× in last 7d / 203× 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 354 total refreshes for this CVE.

  1. 2026-10-05 13:54 UTCGHSA enrichment
  2. 2026-10-05 09:34 UTCGHSA enrichment
  3. 2026-10-05 05:27 UTCGHSA enrichment
  4. 2026-10-05 01:47 UTCEG score recompute
  5. 2026-10-05 01:47 UTCGHSA enrichment
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-04 21:30 UTCGHSA enrichment
  8. 2026-10-04 13:44 UTCGHSA enrichment
  9. 2026-10-04 10:05 UTCGHSA enrichment
  10. 2026-10-04 06:26 UTCGHSA enrichment
  11. 2026-10-04 02:47 UTCGHSA enrichment
  12. 2026-10-03 20:57 UTCGHSA enrichment
  13. 2026-10-03 17:18 UTCEG score recompute
  14. 2026-10-03 17:18 UTCGHSA enrichment
  15. 2026-10-03 14:26 UTCEPSS rescore
  16. 2026-10-03 05:24 UTCGHSA enrichment
  17. 2026-10-03 01:41 UTCGHSA enrichment
  18. 2026-10-02 21:39 UTCEG score recompute
  19. 2026-10-02 21:39 UTCGHSA enrichment
  20. 2026-10-02 17:56 UTCEPSS rescore
  21. 2026-10-02 16:43 UTCGHSA enrichment
  22. 2026-10-02 13:00 UTCGHSA enrichment
  23. 2026-10-02 07:22 UTCGHSA enrichment
  24. 2026-10-02 03:42 UTCGHSA enrichment
  25. 2026-10-01 22:51 UTCEG score recompute
Show 75 more
  1. 2026-10-01 22:51 UTCGHSA enrichment
  2. 2026-10-01 19:50 UTCEPSS rescore
  3. 2026-10-01 13:05 UTCGHSA enrichment
  4. 2026-10-01 09:25 UTCGHSA enrichment
  5. 2026-10-01 05:45 UTCGHSA enrichment
  6. 2026-10-01 01:26 UTCGHSA enrichment
  7. 2026-09-30 20:42 UTCEG score recompute
  8. 2026-09-30 20:42 UTCGHSA enrichment
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-30 08:57 UTCEG score recompute
  11. 2026-09-30 08:57 UTCGHSA enrichment
  12. 2026-09-29 05:50 UTCGHSA enrichment
  13. 2026-09-29 02:11 UTCGHSA enrichment
  14. 2026-09-28 21:47 UTCEG score recompute
  15. 2026-09-28 21:47 UTCGHSA enrichment
  16. 2026-09-28 14:56 UTCGHSA enrichment
  17. 2026-09-28 11:17 UTCGHSA enrichment
  18. 2026-09-28 07:36 UTCGHSA enrichment
  19. 2026-09-28 03:57 UTCGHSA enrichment
  20. 2026-09-28 00:18 UTCGHSA enrichment
  21. 2026-09-27 20:19 UTCGHSA enrichment
  22. 2026-09-27 16:13 UTCEG score recompute
  23. 2026-09-27 16:13 UTCGHSA enrichment
  24. 2026-09-27 13:48 UTCEPSS rescore
  25. 2026-09-27 12:13 UTCGHSA enrichment
  26. 2026-09-27 07:36 UTCEG score recompute
  27. 2026-09-27 07:36 UTCGHSA enrichment
  28. 2026-09-26 15:59 UTCEPSS rescore
  29. 2026-09-25 12:06 UTCGHSA enrichment
  30. 2026-09-25 08:26 UTCGHSA enrichment
  31. 2026-09-25 04:40 UTCGHSA enrichment
  32. 2026-09-25 01:01 UTCGHSA enrichment
  33. 2026-09-24 20:25 UTCGHSA enrichment
  34. 2026-09-24 14:46 UTCEG score recompute
  35. 2026-09-24 14:46 UTCGHSA enrichment
  36. 2026-09-24 10:51 UTCGHSA enrichment
  37. 2026-09-24 07:11 UTCGHSA enrichment
  38. 2026-09-24 03:32 UTCGHSA enrichment
  39. 2026-09-23 23:53 UTCGHSA enrichment
  40. 2026-09-23 20:13 UTCEG score recompute
  41. 2026-09-23 20:13 UTCGHSA enrichment
  42. 2026-09-23 17:54 UTCEPSS rescore
  43. 2026-09-23 14:29 UTCGHSA enrichment
  44. 2026-09-23 10:49 UTCGHSA enrichment
  45. 2026-09-23 07:04 UTCGHSA enrichment
  46. 2026-09-23 03:25 UTCGHSA enrichment
  47. 2026-09-22 23:46 UTCGHSA enrichment
  48. 2026-09-22 20:06 UTCEG score recompute
  49. 2026-09-22 20:06 UTCGHSA enrichment
  50. 2026-09-22 13:34 UTCGHSA enrichment
  51. 2026-09-22 09:54 UTCGHSA enrichment
  52. 2026-09-22 06:14 UTCGHSA enrichment
  53. 2026-09-22 02:35 UTCGHSA enrichment
  54. 2026-09-21 22:55 UTCEG score recompute
  55. 2026-09-21 22:55 UTCGHSA enrichment
  56. 2026-09-21 21:09 UTCEPSS rescore
  57. 2026-09-21 19:16 UTCGHSA enrichment
  58. 2026-09-21 15:37 UTCGHSA enrichment
  59. 2026-09-21 11:56 UTCGHSA enrichment
  60. 2026-09-21 07:59 UTCGHSA enrichment
  61. 2026-09-21 04:17 UTCGHSA enrichment
  62. 2026-09-21 00:38 UTCGHSA enrichment
  63. 2026-09-20 20:59 UTCEG score recompute
  64. 2026-09-20 20:59 UTCGHSA enrichment
  65. 2026-09-20 20:16 UTCEPSS rescore
  66. 2026-09-20 17:19 UTCGHSA enrichment
  67. 2026-09-20 13:39 UTCGHSA enrichment
  68. 2026-09-20 09:21 UTCGHSA enrichment
  69. 2026-09-20 02:34 UTCGHSA enrichment
  70. 2026-09-19 22:48 UTCGHSA enrichment
  71. 2026-09-19 18:38 UTCEG score recompute
  72. 2026-09-19 18:37 UTCGHSA enrichment
  73. 2026-09-19 14:22 UTCGHSA enrichment
  74. 2026-09-19 10:20 UTCGHSA enrichment
  75. 2026-09-19 05:45 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-71063?
CVE-2026-71063 is a critical vulnerability published on August 18, 2026. Vulnerability in the Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the…
When was CVE-2026-71063 disclosed?
CVE-2026-71063 was first published on August 18, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71063 actively exploited?
CVE-2026-71063 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71063?
CVE-2026-71063 has a CVSS base score of 9.6 (the CNA's own assessment, by oracle; NVD's own analysis pending).
How do I remediate CVE-2026-71063?
No fix for CVE-2026-71063 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. The vendor advisories EchelonGraph has for CVE-2026-71063 are linked in the Vendor Advisories panel on this page.

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