Windows
CVE-2026-26111
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessSend crafted network packet to RRAS service
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ExploitTrigger integer overflow in packet handler
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ExecutionCause buffer overflow
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ImpactExecute arbitrary code as SYSTEM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Heap buffer bounds checking
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | RRAS service must be enabled and accessible over network. Attacker requires valid user credentials (PR:L) and target user interaction required (UI:R) to complete exploitation chain on Windows systems. |
| Impact | CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitation no authentication required. Exploitable via remote/network. |
| Exploit ScenarioDerived | A remote attacker without authentication could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Remote code execution in Windows RRAS across Server 2016, 2022, and 2025 via an integer overflow vulnerability allows authenticated attackers to execute arbitrary code over the network with high privileges. Public exploit code exists for this vulnerability, and no patch is currently available. Authenticated users with network access can trigger the vulnerability through a simple interaction to gain complete system compromise.
Earlier versions of this analysis (1)
Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network. [CVSS 8.8 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 15 packages in microsoft
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-122 (Heap-based Buffer Overflow). Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Executive ViewAI
A critical vulnerability in Windows RRAS enables remote code execution without authentication, potentially allowing attackers to gain control of affected systems and access sensitive data. This poses an immediate risk to any organization using RRAS for VPN, dial-up, or remote access services, particularly those with internet-exposed infrastructure.
Disable RRAS services on systems where remote access is not operationally required; implement strict network segmentation and firewall rules to restrict RRAS access to authorized IP ranges only; require multi-factor authentication on all remote access entry points; deploy intrusion detection/prevention systems (IDS/IPS) configured with signatures to detect integer overflow exploitation attempts; monitor Windows Event Viewer for suspicious RRAS activity; consider deploying third-party VPN appliances as alternative access methods; restrict administrative access and implement privileged access management (PAM) solutions.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.
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Exploit-DB