CVE-2026-47040

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-22. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 23, 2026

References (1)

Vendor Advisories for CVE-2026-47040(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 30× in last 7d / 30× 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. 2026-07-28 06:08 UTCGHSA enrichment
  2. 2026-07-28 02:30 UTCGHSA enrichment
  3. 2026-07-27 22:52 UTCGHSA enrichment
  4. 2026-07-27 19:09 UTCGHSA enrichment
  5. 2026-07-27 15:14 UTCEG score recompute
  6. 2026-07-27 15:14 UTCGHSA enrichment
  7. 2026-07-27 14:13 UTCEPSS rescore
  8. 2026-07-27 11:36 UTCGHSA enrichment
  9. 2026-07-27 07:57 UTCGHSA enrichment
  10. 2026-07-27 04:17 UTCGHSA enrichment
  11. 2026-07-27 00:36 UTCGHSA enrichment
  12. 2026-07-26 20:54 UTCGHSA enrichment
  13. 2026-07-26 17:14 UTCEG score recompute
  14. 2026-07-26 17:14 UTCGHSA enrichment
  15. 2026-07-26 14:54 UTCEPSS rescore
  16. 2026-07-26 14:54 UTCEPSS rescore
  17. 2026-07-26 13:35 UTCEG score recompute
  18. 2026-07-26 13:35 UTCGHSA enrichment
  19. 2026-07-26 09:57 UTCGHSA enrichment
  20. 2026-07-26 04:12 UTCEG score recompute
  21. 2026-07-26 04:12 UTCGHSA enrichment
  22. 2026-07-25 14:18 UTCEPSS rescore
  23. 2026-07-24 14:17 UTCEPSS rescore
  24. 2026-07-23 14:18 UTCEPSS rescore
  25. 2026-07-23 03:17 UTCEG score recompute
Show 5 more
  1. 2026-07-22 22:46 UTCEG score recompute
  2. 2026-07-22 22:45 UTCGHSA enrichment
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 21:58 UTCEG score recompute
  5. 2026-07-21 21:38 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-47040?
CVE-2026-47040 is a critical vulnerability published on July 21, 2026. Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services.…
When was CVE-2026-47040 disclosed?
CVE-2026-47040 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47040 actively exploited?
CVE-2026-47040 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 63.3% of all scored CVEs.
What is the CVSS score of CVE-2026-47040?
CVE-2026-47040 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-47040?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47040, 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

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