CVE-2025-30698: Oracle Java SE · Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple
Affects Oracle Java SESource CVE Database V5
Not known to be exploited · CVSS 5.6 Medium.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 49% 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:LExploitation evidence
Disclosed: evidence found.
CVE published 15 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
Mavencom.oracle.java/sepkg:maven/com.oracle.java/seOther threats | Affected
| Fixed in– |
Mavencom.oracle.graalvm/graalvm-jdkpkg:maven/com.oracle.graalvm/graalvm-jdkOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Organizations should inventory their use of Oracle Java SE and GraalVM versions to identify affected deployments, focusing on client-side environments running sandboxed Java Web Start applications or applets. Immediate mitigation includes restricting network access to these Java clients, especially blocking untrusted or internet-facing network traffic to prevent exploitation. Administrators should disable or remove Java Web Start and applet support where possible, migrating legacy applications to modern, supported technologies. Applying Oracle security patches promptly once available is critical. Additionally, implementing network segmentation and endpoint protection can reduce exposure. Monitoring network traffic for unusual protocol activity targeting Java clients can help detect attempted exploitation. Educating users about the risks of running untrusted Java code and enforcing strict code signing policies will further reduce risk. Finally, organizations should review and harden Java sandbox configurations to limit the potential impact of any exploitation.
Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: 2D). Supported versions that are affected are Oracle Java SE: 8u441, 8u441-perf, 11.0.26, 17.0.14, 21.0.6, 24; Oracle GraalVM for JDK: 17.0.14, 21.0.6, 24; Oracle GraalVM Enterprise Edition: 20.3.17 and 21.3.13. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols 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 and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. 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 5.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L).