CVE-2025-4447: eclipse foundation openj9 Stack-based Buffer Overflow

Vulnerability summary

CVE-2025-4447 is a high (CVSS 7.8) Stack-based Buffer Overflow vulnerability in eclipse foundation openj9. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.1% of scored vulnerabilities.

Timeline

1. 09-05-2025
   PublishedVulnerability first disclosed.
2. 10-05-2025
   Last modifiedVulnerability information updated.

Description

In Eclipse OpenJ9 versions up to 0.51, when used with OpenJDK version 8 a stack based buffer overflow can be caused by modifying a file on disk that is read when the JVM starts.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).