What is CVE-2026-55952?

CVE-2026-55952 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension

Which CVE IDs does CVE-2026-55952 cover?

CVE-2026-55952 covers the following CVE IDs: CVE-2026-55952. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2026-55952High

TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension

Vendor

Microsoft Security Response Center (MSRC)

Published

July 7, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-55952 →