Vulnerability · Published Feb 10, 2025 · Assigned by GitHub_M
CVE-2025-25193Denial of Service attack on windows app using Netty
Medium 5.5
In plain English
A medium-severity uncontrolled resource consumption in netty from netty. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | io.netty:netty-common | 4.1.118.Final | GHSA-389x-839f-4rhx |
| Ubuntu:25.10 | netty | no fix listed | UBUNTU-CVE-2025-25193 |
| Ubuntu:26.10 | netty | no fix listed | UBUNTU-CVE-2025-25193 |
Affected products (as reported)
Weakness: CWE-400 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H