CVE-2025-13550
Published: 23 November 2025
Summary
CVE-2025-13550 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 addresses the buffer overflow vulnerability by identifying, patching, and testing firmware updates for the affected /boafrm/formVpnConfigSetup function.
Information input validation prevents buffer overflows by checking the submit-url argument for correctness, length, and appropriateness before processing.
Memory protection mechanisms such as stack canaries, ASLR, and address space layout randomization mitigate exploitation of the buffer overflow for arbitrary code execution.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow vulnerability in the web interface (/boafrm/formVpnConfigSetup) of a public-facing router enables exploitation of a public-facing application for remote code execution.
NVD Description
A vulnerability was determined in D-Link DIR-822K and DWR-M920 1.00_20250513164613/1.1.50. Impacted is an unknown function of the file /boafrm/formVpnConfigSetup. Executing manipulation of the argument submit-url can lead to buffer overflow. The attack can be executed remotely. The exploit has been…
more
publicly disclosed and may be utilized.
Deeper analysisAI
CVE-2025-13550 is a buffer overflow vulnerability 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 file /boafrm/formVpnConfigSetup, where manipulation of the submit-url argument triggers the overflow. Published on 2025-11-23, it carries a CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and is linked to CWE-119 and CWE-120.
The vulnerability is remotely exploitable over the network by attackers with low privileges, requiring low attack complexity and no user interaction. Exploitation can result in high impacts to confidentiality, integrity, and availability, potentially allowing arbitrary code execution or system compromise on affected devices.
References include GitHub issues at https://github.com/QIU-DIE/CVE/issues/33 and https://github.com/QIU-DIE/CVE/issues/47, along with VulDB entries at https://vuldb.com/?ctiid.333317, https://vuldb.com/?id.333317, and https://vuldb.com/?submit.693777. The exploit has been publicly disclosed and may be utilized.
Details
- CWE(s)