CVE-2025-25193

low-risk
Published 2025-02-10

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.

Do I need to act?

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0.10% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Netty

References (4)

Patch https://github.com/netty/netty/commit/d1fbda62d3a47835d3fb35db8bd42ecc205a5386
Third Party Advisory https://github.com/netty/netty/security/advisories/GHSA-389x-839f-4rhx
Third Party Advisory https://security.netapp.com/advisory/ntap-20250221-0006/
Third Party Advisory https://github.com/netty/netty/security/advisories/GHSA-389x-839f-4rhx
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal