# CVE-2025-24970: SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine

> CVE-2025-24970: SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-24970
Last updated: 2026-06-17T08:59:54Z

- Published: 2025-02-10 21:57 UTC · Updated: 2026-06-17 08:59 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 2.2%, 82th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-20

## 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.

## Affected vendors and products

- netty: netty

## Tracked companies

- [Bitbucket](https://rewindex.com/company/bitbucket.md)
- [Confluence](https://rewindex.com/company/confluence.md)
- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-24970)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-24970)
- [https://github.com/netty/netty/commit/87f40725155b2f89adfde68c7732f97c153676c4](https://github.com/netty/netty/commit/87f40725155b2f89adfde68c7732f97c153676c4)
- [https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw](https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-24970 · Markdown: https://rewindex.com/cve/CVE-2025-24970.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-24970 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:53.834Z