What’s Vulnerable › Vulnerabilities

CVE-2024-47535: Denial of Service attack on windows app using Netty

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-11-12 · updated 2026-06-17
• Weakness: CWE-400

Description

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. 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 crashes. This vulnerability is fixed in 4.1.115.

Affected products

• netty: before 4.1.115 — fixed in 4.1.115

How to fix

Upgrade to a fixed version: netty 4.1.115. Check the vendor advisory for mitigations.

References

• https://github.com/netty/netty/commit/fbf7a704a82e7449b48bd0bbb679f5661c6d61a3
• https://github.com/netty/netty/security/advisories/GHSA-xq3w-v528-46rv

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