EUVD-2026-73631
GHSA-wqqj-j3wx-c5pf
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable RRAS service (AV:N), heap exploitation requires precise conditions (AC:H), low-privilege auth needed (PR:L); full RCE impact if successful justifies C:H/I:H/A:H.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine
AnalysisAI
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows a network-reachable low-privileged attacker to execute arbitrary code on affected Windows systems, achieving full confidentiality, integrity, and availability compromise. The vulnerability spans an exceptionally broad range of Microsoft Windows releases from Server 2012 through Windows 11 26H1 and Windows Server 2025, as confirmed by EUVD-2026-73631. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target Windows system must have the Routing and Remote Access Service (RRAS) installed and actively running - RRAS is not enabled by default on Windows desktop editions but is commonly deployed on Windows Server for VPN hosting, site-to-site routing, or NAT. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H scores 7.5, capturing a meaningful tension between full-impact potential and real-world exploitability constraints. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released security updates documented in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69852. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all systems running Windows Server 2012, 2012 R2, 2016, 2019, 2022, Windows 10, or Windows 11 (through version 26H1) with RRAS enabled, prioritizing internet-facing VPN gateways and remote access servers. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
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External POC / Exploit Code
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