CVE-2024-21140Network attack vector

Unauthenticated data modification and disclosure

Published Jul 16, 2024 · Updated Feb 13, 2025

A HotSpot flaw in affected Oracle Java SE and GraalVM releases allows remote attackers to read and modify limited accessible data. Oracle has not published the vulnerable HotSpot operation or how supplied data is processed incorrectly. Exploitation is high-complexity and requires data to reach affected APIs through an application such as a web service, or untrusted code in a sandboxed Java client.

CVSS severity4.8
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A HotSpot flaw in affected Oracle Java SE and GraalVM releases allows remote attackers to read and modify limited accessible data. Oracle has not published the vulnerable HotSpot operation or how supplied data is processed incorrectly. Exploitation is high-complexity and requires data to reach affected APIs through an application such as a web service, or untrusted code in a sandboxed Java client.

The record

CVE
CVE-2024-21140
Published
Jul 16, 2024
Updated
Feb 13, 2025
Vendor
Oracle
Product
Java Development Kit (JDK)
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=17.0.11
  2. Affected versionversion=21.0.3
  3. Affected versionversion=22.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Java Development Kit (JDK)version=17.0.11; version=21.0.3; version=22.0.1
Oracle · Java Runtime Environment (JRE)version=20.3.14; version=21.3.10
Oracle · Java Platform, Standard Edition (Java SE)version=11.0.23; version=17.0.11; version=21.0.3; version=22.0.1; version=8u411; version=8u411-perf
Oracle Corporation · Java Platform, Standard Edition (Java SE)version=Oracle GraalVM Enterprise Edition:20.3.14; version=Oracle GraalVM Enterprise Edition:21.3.10; version=Oracle GraalVM for JDK:17.0.11; version=Oracle GraalVM for JDK:21.0.3; version=Oracle GraalVM for JDK:22.0.1; version=Oracle Java SE:11.0.23; version=Oracle Java SE:17.0.11; version=Oracle Java SE:21.0.3; version=Oracle Java SE:22.0.1; version=Oracle Java SE:8u411; version=Oracle Java SE:8u411-perf

Published CVSS scores

4.8OracleCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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

T1190Exploit Public-Facing Application

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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