Resource exhaustion in Microsoft Windows
CVE-2025-25193
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Microsoft Windows
- Netty — versions <= 4.1.118
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/netty/netty/security/advisories/GHSA-389x-839f-4rhx (Third Party Advisory)
- github.com/netty/netty/commit/d1fbda62d3a47835d3fb35db8bd42ecc205a5386 (Patch, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-25193?
- CVE-2025-25193 is a medium-severity vulnerability in Microsoft Windows, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2025-02-10.
- How severe is CVE-2025-25193?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2025-25193 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.