CVE-2026-62758: Windows Remote Access Connection Manager Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-62758

Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoft product: Windows Remote Access Connection Manager Privilege escalation Memory corruption

What: Heap-based buffer overflow in Remote Access Connection Manager allows privilege escalation.
Who is affected: Authorized local attackers on Windows systems with Remote Access services.
Urgency: High severity (CVSS 7.8) memory corruption vulnerability; not currently exploited.
Action: Apply the latest Windows security patch addressing CVE-2026-62758.

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 7.8
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62758

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.

Low exploitation riskCVE-2026-627580.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-62758	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

critical[NEW] [critical] Microsoft Windows Products: Multiple vulnerabilitiescert-bund
unknownexploitedNCSC-2026-0284 [1.00] [M/H] Vulnerabilities patched in Microsoft Windowsncsc-nl
highCVE-2026-62758: Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized at…nvd

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.

highCVE-2026-65672: Heap-based buffer overflow in Windows Remote Access API allows an authorized attacker to eleva…nvd · 2026-08-11
highCVE-2026-65671: Heap-based buffer overflow in Windows Remote Access API allows an authorized attacker to eleva…nvd · 2026-08-11
highCVE-2026-62819: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to g…nvd · 2026-08-11
highCVE-2026-62783: Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized at…nvd · 2026-08-11
highCVE-2026-62758: Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized at…nvd · 2026-08-11
highCVE-2026-62783: Windows Remote Access Connection Manager Elevation of Privilege Vulnerabilitymsrc · 2026-08-11