What is CVE-2026-62309?

CVE-2026-62309 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. CoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport — single 28-byte packet remote DoS

Which CVE IDs does CVE-2026-62309 cover?

CVE-2026-62309 covers the following CVE IDs: CVE-2026-62309. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-62309?

CVE-2026-62309 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

CVE-2026-62309HighCVSS 7.5

CoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport — single 28-byte packet remote DoS

Vendor

Microsoft Security Response Center (MSRC)

Published

July 18, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-62309 →