CVE-2026-71063

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. a secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

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

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
9.6(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 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 28× in last 7d / 28× 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. 2026-08-21 05:49 UTCGHSA enrichment
  2. 2026-08-21 02:09 UTCEG score recompute
  3. 2026-08-21 02:09 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 22:30 UTCGHSA enrichment
  6. 2026-08-20 18:51 UTCGHSA enrichment
  7. 2026-08-20 15:12 UTCGHSA enrichment
  8. 2026-08-20 13:36 UTCGHSA enrichment
  9. 2026-08-20 10:42 UTCGHSA enrichment
  10. 2026-08-20 07:03 UTCGHSA enrichment
  11. 2026-08-20 03:24 UTCGHSA enrichment
  12. 2026-08-19 23:45 UTCGHSA enrichment
  13. 2026-08-19 20:05 UTCEG score recompute
  14. 2026-08-19 20:05 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 16:25 UTCEG score recompute
  17. 2026-08-19 16:25 UTCGHSA enrichment
  18. 2026-08-19 16:13 UTCEG score recompute
  19. 2026-08-19 16:13 UTCGHSA enrichment
  20. 2026-08-19 15:56 UTCGHSA enrichment
  21. 2026-08-19 12:12 UTCGHSA enrichment
  22. 2026-08-19 08:30 UTCGHSA enrichment
  23. 2026-08-19 04:50 UTCGHSA enrichment
  24. 2026-08-19 01:11 UTCEG score recompute
  25. 2026-08-19 01:11 UTCGHSA enrichment
Show 3 more
  1. 2026-08-18 21:31 UTCEG score recompute
  2. 2026-08-18 21:17 UTCEG score recompute
  3. 2026-08-18 21:13 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database on August 18, 2026, with the most recent update on August 20, 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% probability of exploitation in the next 30 days, which ranks it in the top 84.9% of all scored CVEs.
What is the CVSS score of CVE-2026-71063?
CVE-2026-71063 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-71063?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71063, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-71063

Explore →

Is Your Infrastructure Affected by CVE-2026-71063?

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

Start Free Scan →Browse All CVEs