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Advisory record · GHSA-4g8c-wm8x-jfhw

SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine

CVSS 7.5 HighEPSS 0.022 · 82nd percentile

Published by the GitHub Advisory Database at 10 Feb 2025, 17:38 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.netty:netty-handlerMaven>=4.1.91.Final, <4.1.118.Final4.1.118.Final
Identifiers
GHSA-4g8c-wm8x-jfhw · CVE-2025-24970
Weakness (CWE)
CWE-20
Tags
Published
10 Feb 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The io.netty:netty-handler package, versions from 4.1.91.Final before 4.1.118.Final, does not correctly validate a specially crafted packet received through SslHandler when the native SSLEngine is used. An attacker who can send such packets over the network can cause a native crash. Upgrade to 4.1.118.Final or later. The source also describes a workaround of disabling the native SSLEngine, but its code examples are omitted here.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.022, the 82nd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.