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Vulnerability record · CVE-2025-24970 · published 10 February 2025

CVE-2025-24970: Netty improper input validation vulnerability

Netty · Netty

Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.

7.5 CVSS 3.1 High EPSS 2.2% · top 18.3% CWE-20 · Improper input validation
7.5CVSS 3.1 base score
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/netty/netty/commit/87f40725155b2f89adfde68c7732f97c153676c4 Patch
https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw Vendor Advisory
https://security.netapp.com/advisory/ntap-20250221-0005/ Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-detection ExploitThird Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-mitigation ExploitMitigationThird Party Advisory
https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-24970), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.