#VU103769 Resource exhaustion in Netty - CVE-2025-25193

Vulnerability identifier: #VU103769

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-25193

CWE-ID: CWE-400

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Netty
Universal components / Libraries / Libraries used by multiple products

Vendor: Netty project

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to application attempts to load a file that does not exist. A local user can create a large file on the system and crash the application.

Note, the vulnerability affects Windows installations only.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Netty: 3.2.4 - 3.2.10, 3.3.0 - 3.3.1, 3.4.0 - 3.4.6, 3.5.0 - 3.5.13, 3.6.0 - 3.6.10, 3.7.0 - 3.7.1, 3.8.0 - 3.8.3, 3.9.0 - 3.9.9, 3.10.0 - 3.10.6, 4.0.0 - 4.0.56, 4.1 - 4.1.117

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External links
https://github.com/netty/netty/commit/d1fbda62d3a47835d3fb35db8bd42ecc205a5386
https://github.com/netty/netty/security/advisories/GHSA-389x-839f-4rhx

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.