CVE-2024-21003Network attack vector

Unauthorized modification of accessible Java data

Published Apr 16, 2024 · Updated Mar 28, 2025

Integrity flaw in Oracle JavaFX allows remote attackers to modify data in Java SE 8u401 and GraalVM Enterprise Edition 20.3.13 and 21.3.9. Oracle has not disclosed the affected JavaFX locus or the operation that mishandles untrusted code. Exposure requires user interaction with sandboxed Java Web Start or applet code from an untrusted source; trusted-code server deployments are unaffected.

CVSS severity3.1
Low
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integrity flaw in Oracle JavaFX allows remote attackers to modify data in Java SE 8u401 and GraalVM Enterprise Edition 20.3.13 and 21.3.9. Oracle has not disclosed the affected JavaFX locus or the operation that mishandles untrusted code. Exposure requires user interaction with sandboxed Java Web Start or applet code from an untrusted source; trusted-code server deployments are unaffected.

The record

CVE
CVE-2024-21003
Published
Apr 16, 2024
Updated
Mar 28, 2025
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
CWE-250, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 28, 2025Record 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=Oracle GraalVM Enterprise Edition:20.3.13
  2. Affected versionversion=Oracle GraalVM Enterprise Edition:21.3.9
  3. Affected versionversion=Oracle Java SE:8u401

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Java Platform, Standard Edition (Java SE)version=Oracle GraalVM Enterprise Edition:20.3.13; version=Oracle GraalVM Enterprise Edition:21.3.9; version=Oracle Java SE:8u401

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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-250Execution with Unnecessary Privileges
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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