CVE-2025-60715 in Windows
Summary
by MITRE • 11/11/2025
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.
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Analysis
by VulDB Data Team • 01/05/2026
The vulnerability identified as CVE-2025-60715 represents a critical heap-based buffer overflow within the Windows Routing and Remote Access Service RRAS component. This flaw exists in the processing of network packets and authentication requests within the remote access infrastructure, creating a potential pathway for code execution. The vulnerability affects systems running Windows Server operating systems where RRAS functionality is enabled, particularly those configured to handle remote access connections through protocols such as L2TP, PPTP, or SSTP. The heap overflow occurs when the service processes malformed network traffic or authentication messages that exceed allocated buffer boundaries, leading to memory corruption that can be exploited by malicious actors.
Technical exploitation of this vulnerability requires an attacker to possess valid authentication credentials for the target system, as the flaw operates within the context of authenticated network access. The buffer overflow specifically manifests when the RRAS service handles incoming network requests that contain oversized or malformed data structures, causing memory corruption in heap-allocated buffers. This type of vulnerability falls under CWE-121 heap-based buffer overflow classification, where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The vulnerability aligns with ATT&CK technique T1078.002 for valid accounts and T1203 for exploitation for privilege escalation, as successful exploitation could potentially lead to system compromise and elevated privileges within the network infrastructure.
The operational impact of CVE-2025-60715 extends beyond immediate code execution capabilities to encompass potential network infrastructure disruption and lateral movement within compromised environments. Attackers could leverage this vulnerability to establish persistent access points within corporate networks, particularly in scenarios where RRAS services are used for remote worker connections or branch office connectivity. The exploitation process typically involves crafting malicious network packets that trigger the buffer overflow condition, followed by payload delivery that executes within the context of the RRAS service. This creates a significant risk for organizations relying on Windows RRAS for secure remote access, as the vulnerability could enable attackers to bypass traditional network security controls and gain unauthorized access to internal resources.
Mitigation strategies for CVE-2025-60715 should prioritize immediate patch deployment from Microsoft, as the vendor has released security updates addressing this heap overflow vulnerability. Organizations must also implement network segmentation and access controls to limit exposure of RRAS services to untrusted networks, while monitoring for anomalous network traffic patterns that could indicate exploitation attempts. The implementation of network intrusion detection systems with signature-based detection for known exploit patterns can help identify potential attacks targeting this vulnerability. Additionally, security teams should conduct thorough network assessments to identify all systems running RRAS services and ensure proper patch management processes are in place. Organizations should also consider disabling RRAS functionality if it is not essential for business operations, reducing the attack surface and minimizing the risk of exploitation through this specific vulnerability.