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CVE-2026-56647: Windows Remote Access Service Infrastructure Elevation of Privilege Vulnerability

highCVSS 8.8CVE-2026-56647
Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized attacker to elevate privileges over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows Remote Access ServicePrivilege escalation
What
Integer overflow in Windows Remote Access Service allows authorized privilege escalation over a network.
Who is affected
Authorized users of Windows Remote Access Service.
Urgency
Remediation is urgent due to the high severity and potential for privilege escalation.
Action
Update to the latest version of Windows Remote Access Service.

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
high — CVSS 8.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56647

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-2026-56647coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows Remote Access

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center