What is CVE-2026-42955?

CVE-2026-42955 is a security advisory published by Microsoft Security Response Center (MSRC) with Low severity. Extra fix for CVE-2026-40622 to also clamp the TTL of A/AAAA records disallowing a one-time 'ghost domain' delegation renewal via glue records

Which CVE IDs does CVE-2026-42955 cover?

CVE-2026-42955 covers the following CVE IDs: CVE-2026-42955. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-42955?

CVE-2026-42955 has a CVSS v3 base score of 3.7, published by Microsoft Security Response Center (MSRC).

CVE-2026-42955LowCVSS 3.7

Extra fix for CVE-2026-40622 to also clamp the TTL of A/AAAA records disallowing a one-time 'ghost domain' delegation renewal via glue records

Vendor

Microsoft Security Response Center (MSRC)

Published

July 23, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-42955 →