Widely used Netty framework; memory leak can trigger pool exhaustion and outages across many services; patch available.
CVE-2026-48006
Netty RedisArrayAggregator leaks direct buffers, exhausting memory.
Is CVE-2026-48006 being exploited?
Not confirmed. CVE-2026-48006 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.74% probability of exploitation in the next 30 days.
How severe is CVE-2026-48006?
CVE-2026-48006 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-48006?
Yes. A fix has been recorded for CVE-2026-48006. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-48006 affect?
CVE-2026-48006 affects Netty 4.1.x before 4.1.135.Final, Netty 4.2.x before 4.2.15.Final, Apps using Netty RedisArrayAggregator. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-48006?
Upgrade to patched Netty versions (4.1.135.Final/4.2.15.Final)
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Direct-memory pool exhaustion from leaked buffers can cause Netty channel/connection failures and outages.
Patch when possible
- affected>= 4.2.0.Final and < 4.2.15.Final
- affected< 4.1.135.Final
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.