CVE-2026-62819: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

highCVSS 8.1CVE-2026-62819

Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

CSIRTS triage

vendor: Microsoft product: Windows Routing and Remote Access Service (RRAS)Remote code execution Authentication bypass

What: Remote code execution in Windows RRAS allows unauthorized access and code execution on victim systems.
Who is affected: Unauthorized remote attackers with network access to RRAS-enabled systems.
Urgency: Critical (CVSS 8.1) with unauthenticated remote exploitation; immediate patching required.
Action: Apply Windows security update addressing CVE-2026-62819 and disable RRAS if not required.

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 8.1
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62819

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-2026-628190.58% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-62819	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-2026-62819: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to g…nvd

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.

highCVE-2026-62819: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to g…nvd · 2026-08-11
highCVE-2026-57096: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an autho…nvd · 2026-07-14
highCVE-2026-50451: Missing authentication for critical function in Windows Routing and Remote Access Service (RRA…nvd · 2026-07-14
highCVE-2026-49791: Improper link resolution before file access ('link following') in Windows Routing and Remote A…nvd · 2026-07-14
highCVE-2026-50451: Windows Routing and Remote Access Service (RRAS) Elevation of Privilege Vulnerabilitymsrc · 2026-07-14
highCVE-2026-49791: Windows Routing and Remote Access Service (RRAS) Elevation of Privilege Vulnerabilitymsrc · 2026-07-14