What is CVE-2026-55653?

CVE-2026-55653 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service

Which CVE IDs does CVE-2026-55653 cover?

CVE-2026-55653 covers the following CVE IDs: CVE-2026-55653. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-55653?

CVE-2026-55653 has a CVSS v3 base score of 4.3, published by Microsoft Security Response Center (MSRC).

CVE-2026-55653MediumCVSS 4.3

Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-55653 →