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CVE-2024-20945VulnerabilityPublished Updated

CVE-2024-20945: Oracle Java SE JDK and JRE · Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure

Affects Oracle Java SE JDK and JRESource CVE Database V5

0

Not known to be exploited · CVSS 4.7 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
4.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Feb 2024

  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

AI-suggested

1. Apply Oracle's security patches promptly once available for all affected Java SE and GraalVM versions to remediate the vulnerability. 2. Restrict access to infrastructure running Java environments to trusted and authenticated users only, employing strong authentication and network segmentation to limit lateral movement. 3. Audit and monitor usage of Java APIs, especially those exposed via web services or used by sandboxed Java Web Start applications and applets, to detect anomalous or unauthorized access patterns. 4. Avoid running untrusted or internet-sourced code within Java sandbox environments; if necessary, implement additional sandboxing or code signing to validate code integrity. 5. Employ the principle of least privilege for user accounts on systems running Java runtimes to reduce the impact of compromised credentials. 6. Use runtime application self-protection (RASP) or endpoint detection and response (EDR) tools to detect exploitation attempts targeting Java components. 7. Regularly review and update Java runtime versions to supported, patched releases and deprecate legacy versions that no longer receive security updates. 8. Conduct security awareness training focused on insider threats and credential security to reduce risk of low privileged account misuse.

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u391, 8u391-perf, 11.0.21, 17.0.9, 21.0.1; Oracle GraalVM for JDK: 17.0.9, 21.0.1; Oracle GraalVM Enterprise Edition: 20.3.12, 21.3.8 and 22.3.4. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition executes to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also 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. CVSS 3.1 Base Score 4.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N).

References

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