CVE-2025-53798 in Windows
Summary
by MITRE • 09/09/2025
Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 11/03/2025
The vulnerability identified as CVE-2025-53798 represents a critical buffer over-read condition within the Windows Routing and Remote Access Service component that enables remote information disclosure attacks. This flaw exists in the RRAS functionality responsible for managing network routing and remote access capabilities across windows systems. The issue stems from inadequate input validation and memory management within the service's processing routines for network traffic handling. When improperly formatted network packets are received by the RRAS service, the application fails to properly bounds-check memory allocations leading to a situation where adjacent memory locations are read beyond the intended buffer boundaries. This condition creates a predictable information leak that can be exploited by remote attackers without authentication requirements. The vulnerability affects multiple Windows operating system versions including server and desktop editions that have RRAS functionality enabled. Attackers can leverage this weakness to extract sensitive data from system memory including credentials, configuration details, and other confidential information that may aid in further exploitation attempts. The impact extends beyond simple information disclosure as the leaked data could contain cryptographic keys, session tokens, or other sensitive elements that compromise system security posture. This vulnerability aligns with CWE-125 which specifically addresses out-of-bounds read conditions in software implementations. From an operational perspective, the attack vector requires network-based communication with the target system running RRAS services, making it particularly dangerous in environments where such services are exposed to untrusted networks or internet-facing systems. The exploitation process typically involves crafting specific network traffic patterns that trigger the memory over-read condition during normal service operation. Organizations running RRAS services in production environments face significant risk as this vulnerability can be leveraged for reconnaissance purposes and potentially as a stepping stone for more sophisticated attacks. The ATT&CK framework categorizes this as a information gathering technique under the reconnaissance phase, where adversaries collect system information through network-based attacks. Network traffic analysis may reveal unusual patterns during exploitation attempts, particularly when analyzing packets related to routing protocols and remote access functions. The vulnerability's exploitation does not require elevated privileges on the target system, making it particularly dangerous for environments where RRAS services are running with default configurations or where network segmentation is insufficient. System administrators should consider the broader security implications of this vulnerability in relation to other potential attack vectors that could leverage the leaked information for privilege escalation or lateral movement within compromised networks. The memory disclosure nature of this vulnerability makes it particularly challenging to detect through traditional security monitoring approaches as legitimate network traffic patterns may mask the exploitation activities. Mitigation strategies should include immediate patch deployment for affected Windows systems, network segmentation to isolate RRAS services, and implementation of network monitoring rules designed to detect anomalous traffic patterns associated with this specific vulnerability. Additionally, disabling RRAS services on systems where they are not required provides a strong defense-in-depth measure against exploitation attempts. The vulnerability demonstrates the critical importance of robust memory safety practices in network services and highlights the need for continuous security assessment of core system components that handle external network traffic.