CVE-2025-70222 in DIR-513
Summary
by MITRE • 03/05/2026
Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formLogin,goform/getAuthCode.
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Analysis
by VulDB Data Team • 03/06/2026
The CVE-2025-70222 vulnerability represents a critical stack buffer overflow flaw discovered in D-Link DIR-513 wireless router firmware version 1.10. This vulnerability specifically affects the web-based administrative interface and manifests through the curTime parameter within the goform/formLogin and goform/getAuthCode API endpoints. The issue stems from insufficient input validation and bounds checking in the router's web server implementation, creating a pathway for remote code execution through maliciously crafted HTTP requests. The vulnerability affects the device's authentication mechanism and could potentially allow unauthorized access to the router's administrative functions.
The technical exploitation of this buffer overflow occurs when an attacker submits a specially crafted curTime parameter value that exceeds the allocated stack buffer size. This overflow can overwrite adjacent memory locations including return addresses and control data, potentially allowing an attacker to redirect execution flow and inject malicious code. The vulnerability is classified as a classic stack-based buffer overflow with a CWE-121 classification, representing a fundamental memory safety issue in the router's firmware implementation. The attack vector is remote and requires no authentication, making it particularly dangerous for network-connected devices.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass complete device compromise and potential network infiltration. An attacker could leverage this vulnerability to gain administrative privileges on the router, modify network configurations, intercept traffic, or establish persistent backdoors. The affected D-Link DIR-513 model represents a popular consumer-grade device that may be deployed in residential and small office environments, increasing the attack surface and potential for widespread exploitation. This vulnerability aligns with ATT&CK technique T1071.004 for application layer protocol usage and T1068 for exploit for privilege escalation, making it a significant concern for both individual users and enterprise network security.
Mitigation strategies for CVE-2025-70222 should prioritize immediate firmware updates from D-Link, as the vendor has likely released patches addressing this specific vulnerability. Network administrators should implement network segmentation and access control measures to limit exposure, while monitoring for suspicious traffic patterns related to the affected API endpoints. The vulnerability demonstrates the importance of proper input validation and memory management in embedded systems, highlighting the need for secure coding practices throughout the development lifecycle. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts targeting known router vulnerabilities, particularly those affecting web interfaces and authentication mechanisms.