CVE-2025-30754Network attack vector

Unauthorized data read and modification

Published Jul 15, 2025 · Updated Nov 3, 2025

JSSE in affected Oracle Java SE and GraalVM releases allows remote attackers to read and modify accessible data via TLS connections. Oracle has not published the faulty JSSE operation or the TLS input that triggers it. Exposure is limited to sandboxed Java Web Start applications or applets that load untrusted code and rely on the Java sandbox; trusted-code server deployments are excluded.

CVSS severity4.8
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

JSSE in affected Oracle Java SE and GraalVM releases allows remote attackers to read and modify accessible data via TLS connections. Oracle has not published the faulty JSSE operation or the TLS input that triggers it. Exposure is limited to sandboxed Java Web Start applications or applets that load untrusted code and rely on the Java sandbox; trusted-code server deployments are excluded.

The record

CVE
CVE-2025-30754
Published
Jul 15, 2025
Updated
Nov 3, 2025
Vendor
Oracle Corporation
Product
Oracle GraalVM for JDK
Classifications
CWE-284, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 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=17.0.15
  2. Affected versionversion=21.0.7
  3. Affected versionversion=24.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle GraalVM for JDKversion=17.0.15; version=21.0.7; version=24.0.1
Oracle Corporation · Oracle GraalVM Enterprise Editionversion=21.3.14
Oracle Corporation · Java Platform, Standard Edition (Java SE)version=11.0.27; version=17.0.15; version=21.0.7; version=24.0.1; version=8u451; version=8u451-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

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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