CVE-2026-2169
Published: 08 February 2026
Summary
CVE-2026-2169 is a medium-severity Injection (CWE-74) vulnerability in Dlink Dwr-M921 Firmware. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 26.2th 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 prevents command injection by enforcing validation of the fota_url argument in the vulnerable endpoint.
Ensures timely remediation of the specific command injection flaw in D-Link DWR-M921 firmware version 1.1.50.
Limits the scope and impact of arbitrary commands injected via fota_url by enforcing least privilege on the affected process.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection vulnerability in a web form of a public-facing network device application enables remote exploitation (T1190) and arbitrary Unix shell command execution (T1059.004).
NVD Description
A vulnerability has been found in D-Link DWR-M921 1.1.50. This impacts an unknown function of the file /boafrm/formLtefotaUpgradeFibocom. Such manipulation of the argument fota_url leads to command injection. It is possible to launch the attack remotely. The exploit has been…
more
disclosed to the public and may be used.
Deeper analysisAI
CVE-2026-2169 is a command injection vulnerability affecting D-Link DWR-M921 version 1.1.50. The flaw impacts an unknown function within the file /boafrm/formLtefotaUpgradeFibocom, where manipulation of the fota_url argument enables injection of arbitrary commands. It is classified under CWE-74 and CWE-77, with a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
The vulnerability is exploitable remotely by attackers possessing low privileges, requiring low attack complexity and no user interaction. Successful exploitation grants limited access to execute commands, potentially resulting in low-level impacts to confidentiality, integrity, and availability on the targeted device.
Advisories and details are documented on VulDB (ctiid.344871, id.344871, submit.748930) and a GitHub issue at LX-66-LX/cve-new/issues/3, with a reference to the D-Link website. The exploit has been publicly disclosed and may be used by attackers.
Details
- CWE(s)