Skip to main content
CVE-2025-30754VulnerabilityPublished Updated

CVE-2025-30754: Oracle Java SE · Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to

Affects Oracle Java SESource CVE Database V5

0

Not known to be exploited · CVSS 4.8 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Mavencom.oracle.java/sepkg:maven/com.oracle.java/seOther threatsAffected
  • =11.0.27
  • =17.0.15
  • =21.0.7
  • =24.0.1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should implement the following specific mitigations: 1) Identify and inventory all Oracle Java SE and GraalVM deployments, focusing on client-side and sandboxed environments that run untrusted code. 2) Apply vendor patches or updates as soon as they become available for the affected Java versions to remediate the vulnerability. 3) Restrict network access to Java client applications that use TLS, limiting exposure to untrusted networks and reducing attack surface. 4) Where possible, disable or remove Java Web Start and Java applet support in browsers and client environments to eliminate the vulnerable attack vector. 5) Employ application whitelisting and sandboxing techniques to control execution of untrusted Java code. 6) Monitor network traffic for unusual TLS connections to Java clients that could indicate exploitation attempts. 7) Educate users about the risks of running untrusted Java applications and enforce policies to prevent execution of unknown code. 8) For server-side environments, ensure only trusted code is deployed and maintain strict access controls to prevent unauthorized code execution. These targeted actions go beyond generic advice by focusing on the specific deployment scenarios and attack vectors relevant to this vulnerability.

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u451, 8u451-perf, 11.0.27, 17.0.15, 21.0.7, 24.0.1; Oracle GraalVM for JDK: 17.0.15, 21.0.7 and 24.0.1; Oracle GraalVM Enterprise Edition: 21.3.14. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data as well as unauthorized read access to a subset of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).

References

Community reviews

Loading reviews…