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CVE-2026-62819

Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Published: Aug 11, 2026Updated: Aug 16, 2026 Sources: CVE List NVDCWE-416
8.1HIGH
NVD MITRE
EPSS Score
0.6%
Top 54.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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

In plain language

AI Act now

CVE-2026-62819 is a Windows bug that could let an attacker take control of your computer through the Windows RRAS (Routing and Remote Access Service); even if you don’t use it, you should check whether RRAS is installed or reachable and patch Windows to the listed fixed versions.

Executive summary

CVE-2026-62819 is a Windows Routing and Remote Access Service (RRAS) Remote Code Execution (CWE-416) issue where a remote attacker can trigger the weakness over the network to run code on the affected host; patching is required regardless of whether public exploits are available.

If affected, business impact
Full system takeoverData theft riskBusiness disruptionRansomware follow-on

What to do now

  1. Check which Windows edition/build you run (Windows 10/11 and Windows Server 2012/2012 R2/2016/2019/2022/2025) and confirm whether RRAS is installed and/or exposed to users or the internet.
  2. Update Windows immediately to at least the fixed version for your specific release:
    • Windows 10: 10.0.14393.9418 (one branch), 10.0.17763.9115, 10.0.19044.7663, or 10.0.19045.7663
    • Windows 11: 10.0.22631.7517, 10.0.26100.9106, 10.0.26200.9106, or 10.0.28000.2704
    • Windows Server 2016: 10.0.14393.9418
    • Windows Server 2019: 10.0.17763.9115
    • Windows Server 2022: 10.0.20348.5440
    • Windows Server 2025: 10.0.26100.33222
  3. If you cannot patch right away, reduce exposure first: disable RRAS (or the RRAS role) if it isn’t needed, and restrict network access so RRAS is reachable only from approved internal systems/VPN management paths.
  4. After patching, verify Windows reports the updated build number and review network/security logs for RRAS-related connection attempts around the time of the update.
Patch / advisory Usually a quick update

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-416

Affected Products

Microsoft
commercial·US
Windows 10 Version 1607On-premOS
Operating Systems / windows
Windows 11 version 23H2On-premOS
Operating Systems / windows
Windows Server 2012 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2012 R2 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2016 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2019 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2022On-premOS
Operating Systems / windows
Windows Server 2025 (Server Core installation)On-premOS
Operating Systems / windows
and 25 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-62819?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62819
msrc.microsoft.com
News mentions
4

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