What is CVE-2026-14586?

CVE-2026-14586 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Assertion in libngtcp2 when under pressure in high concurrency DNS-over-QUIC environments

Which CVE IDs does CVE-2026-14586 cover?

CVE-2026-14586 covers the following CVE IDs: CVE-2026-14586. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-14586?

CVE-2026-14586 has a CVSS v3 base score of 5.9, published by Microsoft Security Response Center (MSRC).

CVE-2026-14586MediumCVSS 5.9

Assertion in libngtcp2 when under pressure in high concurrency DNS-over-QUIC environments

Vendor

Microsoft Security Response Center (MSRC)

Published

July 23, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-14586 →