Summary

Netty, an asynchronous, event-driven network application framework, has a vulnerability in versions up to and including 4.1.118.Final. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crash. A similar issue was previously reported as CVE-2024-47535. This issue was fixed, but the fix was incomplete in that null-bytes were not counted against the input limit. Commit d1fbda62d3a47835d3fb35db8bd42ecc205a5386 contains an updated fix.

CVE: CVE-2025-25193
CWE: CWE-400

References

• https://ossindex.sonatype.org/vulnerability/CVE-2025-25193?component-type=maven&component-name=io.netty%2Fnetty-common&utm_source=ossindex-client&utm_medium=integration&utm_content=1.8.1
• http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-25193
• GHSA-389x-839f-4rhx