CVE-2026-47039Network attack vector

Authenticated modification of Java VM data

Published Jul 21, 2026 · Updated Jul 21, 2026

Improper access control in Oracle Database Java VM allows remote authenticated users to modify critical data through Oracle Net. Oracle has not disclosed the flawed Java VM operation or how it mishandles attacker-controlled input. Create Session privilege is required in affected releases 19.3 through 19.31, 21.3 through 21.22, and 23.4.0 through 23.26.2; successful attacks cannot read data or interrupt service.

CVSS severity6.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper access control in Oracle Database Java VM allows remote authenticated users to modify critical data through Oracle Net. Oracle has not disclosed the flawed Java VM operation or how it mishandles attacker-controlled input. Create Session privilege is required in affected releases 19.3 through 19.31, 21.3 through 21.22, and 23.4.0 through 23.26.2; successful attacks cannot read data or interrupt service.

The record

CVE
CVE-2026-47039
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
Oracle
Product
Oracle Database
Classifications
CWE-284, T1565
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=19.3 <=19.31
  2. Affected versionversion=21.3 <=21.22
  3. Affected versionversion=23.4.0 <=23.26.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle · Oracle Databaseversion=19.3 <=19.31; version=21.3 <=21.22; version=23.4.0 <=23.26.2

Published CVSS scores

6.5OracleCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1565Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo