CVE-2025-30749 Overview
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: 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 multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in takeover of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition.
Critical Impact
This vulnerability allows for a complete system takeover by an unauthenticated attacker, impacting confidentiality, integrity, and availability.
Affected Products
- Oracle JRE 8u451
- Oracle JDK 11.0.27
- Oracle GraalVM Enterprise Edition 21.3.14
Discovery Timeline
- Not Available - Vulnerability discovered by Not Available
- Not Available - Responsible disclosure to Oracle
- Not Available - CVE CVE-2025-30749 assigned
- Not Available - Oracle releases security patch
- 2025-07-15 - CVE CVE-2025-30749 published to NVD
- 2025-11-03 - Last updated in NVD database
Technical Details for CVE-2025-30749
Vulnerability Analysis
The vulnerability exists in the 2D component of Oracle Java SE and related products, allowing remote code execution by exploiting weaknesses in handling untrusted code within the Java sandbox, typically in client environments.
Root Cause
The root cause involves improper input validation in the handling of untrusted code executed in the Java environment, specifically within sandboxed Java Web Start applications or applets.
Attack Vector
Attackers can exploit this vulnerability over a network without authentication. The attack can be carried out via multiple protocols, targeting client environments running untrusted Java code.
// Example exploitation code (sanitized)
String maliciousInput = "<untrusted code>";
Process process = Runtime.getRuntime().exec(maliciousInput);
process.waitFor();
Detection Methods for CVE-2025-30749
Indicators of Compromise
- Unusual network traffic from Java applications
- Unexpected changes to application behaviors
- Execution of unauthorized processes
Detection Strategies
Implement monitoring for Java application activities, focusing on execution traces that deviate from normal application behavior. Use network security tools to detect anomalous traffic patterns.
Monitoring Recommendations
Employ host and network monitoring solutions to detect suspicious activity. Leverage threat intelligence feeds to update detection signatures specifically targeting Java exploits.
How to Mitigate CVE-2025-30749
Immediate Actions Required
- Disable any untrusted Java applets and Web Start applications
- Restrict network access to Java components
- Update to patched versions as soon as possible
Patch Information
Oracle has released patches for this vulnerability. Ensure your systems are updated to the latest versions as referenced in Oracle's advisory here.
Workarounds
Restrict network access to vulnerable Java deployments and avoid executing untrusted code.
# Configuration example to restrict Java execution
echo "security.manager.enabled=true" >> /etc/java/java.conf
java -Djava.security.manager
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
