CVE-2026-2085
Published: 07 February 2026
Summary
CVE-2026-2085 is a high-severity Injection (CWE-74) vulnerability in Dlink Dwr-M921 Firmware. Its CVSS base score is 7.3 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 31.5% 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-2 (Flaw Remediation).
Deeper analysis
CVE-2026-2085 is a command injection vulnerability affecting the D-Link DWR-M921 router on firmware version 1.1.50. The flaw exists in the sub_419F20 function of the /boafrm/formUSSDSetup file within the USSD Configuration Endpoint component, where manipulation of the ussdValue argument enables command injection. Published on 2026-02-07, it is associated with CWE-74 and CWE-77.
The vulnerability carries a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H), indicating network accessibility, low attack complexity, and a requirement for high privileges with no user interaction. Remote attackers possessing sufficient privileges can exploit it to achieve high impacts on confidentiality, integrity, and availability, potentially leading to full system compromise.
References, including GitHub issues at https://github.com/LX-66-LX/cve-new/issues/1 and VulDB entries at https://vuldb.com/?ctiid.344652, document the public disclosure of the exploit, which may be used by attackers. No specific mitigation or patch details are outlined in the provided advisories.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5728
Vulnerability details
A security vulnerability has been detected in D-Link DWR-M921 1.1.50. Affected is the function sub_419F20 of the file /boafrm/formUSSDSetup of the component USSD Configuration Endpoint. The manipulation of the argument ussdValue leads to command injection. The attack can be initiated…
more
remotely. The exploit has been disclosed publicly and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection in the web UI endpoint of a network device directly enables remote exploitation of a public-facing application and arbitrary Unix shell command execution.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of the ussdValue argument to block command injection at the formUSSDSetup endpoint.
Limits the high-privilege accounts that can reach the vulnerable USSD Configuration Endpoint, reducing the population able to supply malicious input.
Mandates timely patching or firmware updates for the publicly disclosed command-injection flaw in DWR-M921 1.1.50.