CVE-2026-2129
Published: 08 February 2026
Summary
CVE-2026-2129 is a high-severity Command Injection (CWE-77) vulnerability in Dlink Dir-823X Firmware. Its CVSS base score is 7.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 29.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection in public-facing router web interface directly enables remote exploitation (T1190) and Unix shell command execution (T1059.004).
NVD Description
A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. Performing a manipulation of the argument ac_ipaddr/ac_ipstatus/ap_randtime results in os command injection. The attack may be initiated remotely. The exploit…
more
has been made public and could be used.
Deeper analysisAI
CVE-2026-2129 is an OS command injection vulnerability (CWE-77, CWE-78) in the D-Link DIR-823X router running firmware version 250416. The issue affects an unknown functionality within the /goform/set_ac_status file, where manipulation of the arguments ac_ipaddr, ac_ipstatus, or ap_randtime enables arbitrary command execution. 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) and was published on 2026-02-08.
The vulnerability is remotely exploitable over the network with low attack complexity but requires high privileges (PR:H) on the target system, with no user interaction needed. A successful exploit allows an attacker to achieve high impacts on confidentiality, integrity, and availability, potentially leading to full compromise of the affected router through injected operating system commands.
Advisories and details are documented in references including a GitHub issue at https://github.com/master-abc/cve/issues/23, multiple VulDB entries at https://vuldb.com/?ctiid.344764, https://vuldb.com/?id.344764, and https://vuldb.com/?submit.746935, as well as the D-Link website at https://www.dlink.com/. An exploit for this vulnerability has been made public and could be used.
Details
- CWE(s)