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CVE-2026-54120: Microsoft Surface Remote Code Execution Vulnerability

criticalCVSS 9.9CVE-2026-54120
Improper input validation in Microsoft Surface allows an authorized attacker to execute code over a network.

CSIRTS triage

What
Improper input validation in Microsoft Surface allows an authorized attacker to execute code over a network.
Who is affected
Deployments of Microsoft Surface are affected.
Urgency
Remediation is critical due to the high severity and potential for exploitation.
Action
Apply the security update provided by Microsoft immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
critical — CVSS 9.9
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54120

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-54120coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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