How severe is CVE-2025-25193?

CVE-2025-25193 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-25193 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25193?

CVE-2025-25193 affects Netty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25193?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-25193 have an EU (EUVD) identifier?

Yes. CVE-2025-25193 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4081.

When was CVE-2025-25193 published?

CVE-2025-25193 was published on 2025-02-10 and last updated on 2026-06-17.

CVE-2025-25193

CVE-2025-25193 is a medium-severity vulnerability in Netty with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4081
Weakness: CWE-400
Affected product: Netty
Published: 2025-02-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-25193?: CVE-2025-25193 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-25193 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25193?: CVE-2025-25193 affects Netty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25193?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-25193 have an EU (EUVD) identifier?: Yes. CVE-2025-25193 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4081.
When was CVE-2025-25193 published?: CVE-2025-25193 was published on 2025-02-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

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