CVE-2025-30691Network attack vector

Data read and modification via undisclosed compiler flaw

Published Apr 15, 2025 · Updated Nov 3, 2025

Improper access control in the Compiler component of Oracle Java SE 21.0.6 and 24 allows remote attackers to read and modify data. Oracle has not disclosed the compiler locus or the operation that mishandles untrusted input. Exploitation requires a high-complexity path through Compiler APIs, such as a web service supplying data, or untrusted code running in a sandboxed Java deployment.

CVSS severity4.8
Medium
EPSS probability0.58%
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 the Compiler component of Oracle Java SE 21.0.6 and 24 allows remote attackers to read and modify data. Oracle has not disclosed the compiler locus or the operation that mishandles untrusted input. Exploitation requires a high-complexity path through Compiler APIs, such as a web service supplying data, or untrusted code running in a sandboxed Java deployment.

The record

CVE
CVE-2025-30691
Published
Apr 15, 2025
Updated
Nov 3, 2025
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=21.0.6
  2. Affected versionversion=24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Java Platform, Standard Edition (Java SE)version=21.0.6; version=24

Published CVSS scores

4.8Oracle CorporationCVSS: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

CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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