CVE-2026-47034Network attack vector

Unauthorized data modification via undisclosed access-control flaw

Published Jul 21, 2026 · Updated Jul 21, 2026

Improper access control in JavaFX in Oracle Java SE 8u491 allows remote attackers to modify accessible data through untrusted code. Oracle has not disclosed the affected JavaFX locus or the incorrect operation performed on attacker-controlled input. Exploitation requires another person to interact with sandboxed Java Web Start or applet code; server deployments that load only administrator-installed code are not affected.

CVSS severity3.1
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in JavaFX in Oracle Java SE 8u491 allows remote attackers to modify accessible data through untrusted code. Oracle has not disclosed the affected JavaFX locus or the incorrect operation performed on attacker-controlled input. Exploitation requires another person to interact with sandboxed Java Web Start or applet code; server deployments that load only administrator-installed code are not affected.

The record

CVE
CVE-2026-47034
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
Oracle
Product
Java Platform, Standard Edition (Java SE)
Classifications
CWE-284, T1203
Attack vector
network
Privileges
unauthenticated

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

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Is a vulnerable build present?

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

  1. Affected versionversion=8u491

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Java Platform, Standard Edition (Java SE)version=8u491

Published CVSS scores

3.1OracleCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1203Exploitation for Client Execution

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

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Your stack

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