CVE-2026-42009 Gnutls: gnutls: denial of service via dtls packet reordering vulnerability — CVE-2026-42009

Summary

CVE-2026-42009 is a advisory from CVE. CVE-2026-42009 Gnutls: gnutls: denial of service via dtls packet reordering vulnerability Vendor: Microsoft. Severity/Threat: high.

Product

Security Update Guide

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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