CVE-2025-13551
Published: 23 November 2025
Summary
CVE-2025-13551 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Dlink Dir-822K Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 49.9% of CVEs by exploit likelihood; 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-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Flaw remediation directly mitigates this buffer overflow vulnerability by applying firmware patches to affected D-Link routers.
Information input validation checks and sanitizes the submit-url argument in /boafrm/formWanConfigSetup to prevent buffer overflows.
Memory protection mechanisms such as stack canaries, ASLR, and DEP hinder exploitation of the buffer overflow for arbitrary code execution.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow vulnerability in the web management interface (/boafrm/formWanConfigSetup) of D-Link routers enables remote exploitation with low privileges for arbitrary code execution, directly facilitating T1190: Exploit Public-Facing Application.
NVD Description
A vulnerability was identified in D-Link DIR-822K and DWR-M920 1.00_20250513164613/1.1.50. The affected element is an unknown function of the file /boafrm/formWanConfigSetup. The manipulation of the argument submit-url leads to buffer overflow. The attack is possible to be carried out remotely.…
more
The exploit is publicly available and might be used.
Deeper analysisAI
CVE-2025-13551 is a buffer overflow vulnerability (CWE-119, CWE-120) identified in D-Link DIR-822K and DWR-M920 routers running firmware versions 1.00_20250513164613 and 1.1.50. The flaw affects an unknown function in the /boafrm/formWanConfigSetup file, where manipulation of the submit-url argument triggers the overflow. Published on 2025-11-23, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
The vulnerability is remotely exploitable over the network by attackers with low privileges, requiring low complexity and no user interaction. Successful exploitation can result in high impacts to confidentiality, integrity, and availability, potentially enabling arbitrary code execution or system compromise on affected devices.
Advisories and further details, including potential mitigation guidance, are available in references such as VulDB entries (ctiid.333318, id.333318, submit.693785) and GitHub issues at QIU-DIE/CVE #35 and #46. A public exploit is available and might be used in attacks.
Details
- CWE(s)