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CVE-2026-72939: Windows Routing and Remote Access Service (RRAS) Denial of Service Vulnerability

mediumCVSS 6.5CVE-2026-72939
Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to deny service over a network.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 6.5
Published
2026-09-08
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72939

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-72939coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows Routing and

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.

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