CVE-2025-60715 Overview
CVE-2025-60715 is a heap-based buffer overflow vulnerability in the Windows Routing and Remote Access Service (RRAS). An authorized attacker can exploit the flaw over the network to execute arbitrary code on affected systems. The vulnerability impacts a broad range of Microsoft Windows client and server releases, including Windows 10, Windows 11, and Windows Server editions from Server 2008 through Server 2025. Successful exploitation requires user interaction and low-privilege authentication, but yields high impact to confidentiality, integrity, and availability. Microsoft has assigned the issue to weakness class [CWE-122] and published a security update through the Microsoft Security Response Center.
Critical Impact
An authenticated network attacker who triggers the RRAS heap overflow can run arbitrary code on the target host, gaining a foothold for lateral movement across enterprise networks.
Affected Products
- Microsoft Windows 10 (1607, 1809, 21H2, 22H2) and Windows 11 (23H2, 24H2, 25H2)
- Microsoft Windows Server 2008 SP2, Server 2008 R2 SP1, Server 2012, and Server 2012 R2
- Microsoft Windows Server 2016, 2019, 2022, 2022 23H2, and Server 2025
Discovery Timeline
- 2025-11-11 - CVE-2025-60715 published to NVD
- 2025-11-17 - Last updated in NVD database
Technical Details for CVE-2025-60715
Vulnerability Analysis
The vulnerability resides in the Routing and Remote Access Service, a Windows component that provides routing, VPN, and dial-up remote access capabilities. The flaw is a heap-based buffer overflow classified under [CWE-122]. RRAS fails to correctly validate the size of attacker-influenced input before copying it into a heap-allocated buffer. The resulting out-of-bounds write corrupts adjacent heap metadata or object pointers handled by the RRAS process.
An attacker who controls the layout of the corrupted heap region can redirect execution flow. Because RRAS runs with elevated service privileges, successful exploitation produces code execution in a high-privilege context. Microsoft confirms the network attack vector, low attack complexity, and required user interaction in its advisory.
Root Cause
The root cause is improper bounds checking on data processed by RRAS. The service trusts a length or size field from an incoming network message and uses it to copy data into a fixed-size heap buffer. When the supplied value exceeds the destination capacity, the copy overruns the buffer and corrupts adjacent heap structures.
Attack Vector
Exploitation requires an authenticated session and some user interaction on the target. The attacker sends a crafted request to a system running RRAS over the network. The malformed payload triggers the overflow inside the service process. Refer to the Microsoft Security Update CVE-2025-60715 advisory for protocol-level details.
No public proof-of-concept exploit is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2025-60715
Indicators of Compromise
- Unexpected crashes or restarts of the RemoteAccess service (svchost.exe hosting RRAS) recorded in the Windows System event log.
- Child processes spawned by the RRAS service host, particularly cmd.exe, powershell.exe, or other LOLBins under a svchost.exe parent running RRAS.
- Anomalous outbound network connections originating from the RRAS service process to unfamiliar destinations.
Detection Strategies
- Monitor for process creation events where the parent is the RRAS-hosting svchost.exe and the child is an interactive shell or scripting interpreter.
- Alert on Windows Error Reporting events (Event ID 1000/1001) referencing RRAS modules, which can indicate failed exploitation attempts.
- Inspect inbound traffic to RRAS-listening ports for malformed or oversized protocol fields associated with VPN and routing protocols.
Monitoring Recommendations
- Inventory all servers and workstations where RRAS is installed and enabled, then prioritize them for log forwarding to a central SIEM.
- Baseline normal RRAS traffic volume and protocol mix to enable detection of anomalous client behavior.
- Correlate authentication events with RRAS process anomalies to identify abuse of compromised credentials.
How to Mitigate CVE-2025-60715
Immediate Actions Required
- Apply the Microsoft November 2025 security update for every affected Windows client and server SKU listed in the advisory.
- Disable the Routing and Remote Access Service on systems that do not require routing, VPN, or dial-up functionality.
- Restrict network exposure of RRAS endpoints to trusted management networks using host and perimeter firewalls.
Patch Information
Microsoft has released security updates addressing CVE-2025-60715 across all affected Windows versions. Administrators should consult the Microsoft Security Update CVE-2025-60715 advisory for the specific KB numbers per operating system build and deploy them through Windows Update, WSUS, or the Microsoft Update Catalog.
Workarounds
- Stop and disable the RemoteAccess service on hosts that do not need RRAS functionality until patches are applied.
- Block inbound access to RRAS-related ports at the perimeter and limit administrative access to authenticated, trusted users only.
- Enforce least-privilege access and strong authentication for any account that can reach RRAS endpoints, reducing the population of potential attackers.
# Configuration example: disable RRAS where not required (run as Administrator)
sc.exe stop RemoteAccess
sc.exe config RemoteAccess start= disabled
# Verify service state
sc.exe query RemoteAccess
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
