CVE-2024-30094 Overview
CVE-2024-30094 is a remote code execution vulnerability in the Windows Routing and Remote Access Service (RRAS). The flaw is classified as a heap-based buffer overflow [CWE-122] affecting a broad set of Windows client and server releases. An attacker who successfully exploits this vulnerability can execute arbitrary code in the context of the affected service.
Exploitation requires user interaction and local access according to the CVSS vector, and the issue impacts confidentiality, integrity, and availability. Microsoft published the advisory on June 11, 2024, and the record was last modified on July 20, 2026.
Critical Impact
Successful exploitation allows arbitrary code execution against systems running the RRAS role, enabling full compromise of confidentiality, integrity, and availability.
Affected Products
- Microsoft Windows 10 (1507, 1607, 1809, 21H2, 22H2)
- Microsoft Windows 11 (21H2, 22H2, 23H2)
- Microsoft Windows Server 2008, 2012, 2016, 2019, 2022, and 2022 23H2
Discovery Timeline
- 2024-06-11 - CVE-2024-30094 published to NVD
- 2026-07-20 - Last updated in NVD database
Technical Details for CVE-2024-30094
Vulnerability Analysis
CVE-2024-30094 is a heap-based buffer overflow [CWE-122] in the Windows Routing and Remote Access Service. RRAS provides routing, VPN, and dial-up remote access functionality on Windows client and server platforms. The service processes complex network protocol data structures, and improper bounds checking on heap-allocated buffers allows an attacker to write beyond the intended allocation.
Overwriting adjacent heap metadata or function pointers enables the attacker to redirect execution flow. Because RRAS runs with elevated privileges, code executed through the flaw inherits those privileges. The EPSS score is 0.906%, placing this vulnerability in the 56.9th percentile for likelihood of exploitation.
Root Cause
The root cause is missing or insufficient length validation on attacker-controlled input processed by the RRAS component before it is copied into a heap buffer. When the input exceeds the destination size, the write corrupts adjacent heap structures. Attackers can leverage this corruption to control program state and pivot to arbitrary code execution.
Attack Vector
The CVSS vector indicates a local attack vector with user interaction required. Exploitation typically involves inducing a user or process on the target system to interact with a crafted artifact that reaches the vulnerable RRAS code path. The attacker does not need prior authentication, and successful exploitation results in code execution with the privileges of the RRAS service.
No public proof-of-concept code has been released, and the vulnerability is not listed on the CISA Known Exploited Vulnerabilities catalog. Technical exploitation details are described in prose because no verified exploit sample is available. See the Microsoft Security Advisory for authoritative technical guidance.
Detection Methods for CVE-2024-30094
Indicators of Compromise
- Unexpected crashes or restarts of the RemoteAccess service (svchost.exe hosting RRAS).
- Anomalous child processes spawned from svchost.exe instances hosting the Routing and Remote Access Service.
- Windows Error Reporting entries referencing heap corruption in RRAS modules.
Detection Strategies
- Monitor the Windows Event Log for repeated RRAS service faults and Application Error events referencing heap corruption.
- Alert on process lineage where the RRAS-hosting svchost.exe launches interactive shells, cmd.exe, powershell.exe, or scripting engines.
- Compare installed Windows security update levels against the June 2024 patch baseline to identify systems still exposed.
Monitoring Recommendations
- Inventory hosts with the Routing and Remote Access role enabled and prioritize them for elevated monitoring.
- Forward RRAS and system logs to a centralized SIEM for correlation with endpoint telemetry.
- Baseline normal RRAS process behavior and alert on deviations such as unusual network connections or memory allocation patterns.
How to Mitigate CVE-2024-30094
Immediate Actions Required
- Apply the Microsoft security update for CVE-2024-30094 to all affected Windows client and server systems.
- Identify hosts running the Routing and Remote Access role and prioritize them for patching.
- Disable the RRAS role on systems where it is not required for business operations.
Patch Information
Microsoft released fixes as part of its scheduled security updates. Refer to the Microsoft Security Advisory for CVE-2024-30094 for the KB article corresponding to each affected Windows version and install the appropriate cumulative update.
Workarounds
- Stop and disable the RemoteAccess service on hosts that do not require RRAS functionality.
- Restrict access to RRAS management interfaces using host-based firewall rules and network segmentation.
- Enforce least-privilege on accounts that can interact with the RRAS service and its configuration.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
