CVE-2025-70220
Published: 04 March 2026
Summary
CVE-2025-70220 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Dlink Dir-513 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 9.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly validates the curTime parameter to prevent stack buffer overflows from malformed inputs in the goform/formAutoDetecWAN_wizard4 endpoint.
Requires timely remediation of the identified stack buffer overflow flaw through firmware updates for the D-Link DIR-513 router.
Implements memory protections such as stack canaries or ASLR to mitigate exploitation of the stack buffer overflow even if input validation fails.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unauthenticated remote stack buffer overflow in public-facing router web endpoint enables remote code execution, directly facilitating T1190: Exploit Public-Facing Application.
NVD Description
Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formAutoDetecWAN_wizard4.
Deeper analysisAI
CVE-2025-70220 is a stack buffer overflow vulnerability (CWE-121) in D-Link DIR-513 router version 1.10. The flaw occurs via the curTime parameter sent to the goform/formAutoDetecWAN_wizard4 endpoint. Published on 2026-03-04, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its potential for severe impacts across confidentiality, integrity, and availability.
Unauthenticated remote attackers can exploit this vulnerability over the network with low attack complexity and no user interaction required. Exploitation enables high-impact outcomes, including potential remote code execution, system compromise, data theft, modification, or denial of service on the affected router.
Advisories and mitigation details are referenced in D-Link's security bulletin at https://www.dlink.com/en/security-bulletin/, the DIR-513 product support page at https://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DIR-513, and a GitHub CVE report at https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2025-70220.
Details
- CWE(s)