CVE-2026-2227
Published: 09 February 2026
Summary
CVE-2026-2227 is a medium-severity Injection (CWE-74) vulnerability in Dlink Dcs-931L Firmware. Its CVSS base score is 5.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 24.8th 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 SA-22 (Unsupported System Components) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-2227 is a command injection vulnerability affecting D-Link DCS-931L cameras in versions up to 1.13.0. The flaw exists in the doSystem function of the /setSystemAdmin file, where manipulation of the AdminID argument enables arbitrary command injection. Published on 2026-02-09, it is rated at CVSS 3.1 score of 4.7 (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L) and maps to CWEs-74 and CWE-77.
The vulnerability is exploitable remotely by attackers with high privileges, such as administrative access (PR:H). Upon successful exploitation, adversaries can achieve low-level impacts on confidentiality, integrity, and availability, potentially executing injected commands within the context of the affected component.
Advisories note that the vulnerability only affects products no longer supported by the maintainer, with no patches available. An exploit has been publicly released and is documented on GitHub at https://github.com/cha0yang1/CVE/blob/main/D-Link%20DCS931L1.md, alongside details from VulDB references including https://vuldb.com/?ctiid.344944, https://vuldb.com/?id.344944, https://vuldb.com/?submit.753450, and https://vuldb.com/?submit.753980.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-6607
Vulnerability details
A vulnerability was found in D-Link DCS-931L up to 1.13.0. Impacted is the function doSystem of the file /setSystemAdmin. Performing a manipulation of the argument AdminID results in command injection. The attack may be initiated remotely. The exploit has been…
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made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection in network-exposed web/CGI endpoint (AdminID param) directly enables remote exploitation of public-facing application and Unix shell command execution on the device.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of the AdminID argument to block command injection in doSystem.
Mandates replacement or isolation of the unsupported DCS-931L device for which no patches exist.
Restricts administrative privileges so fewer accounts can reach the vulnerable /setSystemAdmin endpoint.