What is CVE-2026-63959?

CVE-2026-63959 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT

Which CVE IDs does CVE-2026-63959 cover?

CVE-2026-63959 covers the following CVE IDs: CVE-2026-63959. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-63959?

CVE-2026-63959 has a CVSS v3 base score of 9.8, published by Microsoft Security Response Center (MSRC).

CVE-2026-63959CriticalCVSS 9.8

usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT

Vendor

Microsoft Security Response Center (MSRC)

Published

July 23, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-63959 →