CVE-2026-2061
Published: 06 February 2026
Summary
CVE-2026-2061 is a medium-severity Command Injection (CWE-77) vulnerability in Dlink Dir-823X Firmware. Its CVSS base score is 5.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Unix Shell (T1059.004); ranked at the 45.1th 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 AC-6 (Least Privilege).
Deeper analysis
CVE-2026-2061 is an OS command injection vulnerability (CWE-77, CWE-78) in the D-Link DIR-823X router running firmware version 250416. The flaw affects the function sub_424D20 in the file /goform/set_ipv6, where manipulated input can lead to arbitrary OS command execution. Published on 2026-02-06, it carries a CVSS v3.1 base score of 4.7 (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L).
The vulnerability enables remote exploitation by attackers with high privileges, requiring low complexity and no user interaction. Successful attacks can result in limited impacts to confidentiality, integrity, and availability, such as executing unauthorized commands on the device.
Advisories and details are documented on VulDB (ctiid.344621, id.344621, submit.744286) and the D-Link website, along with a public exploit disclosure on GitHub (master-abc/cve/issues/20). The exploit has been publicly disclosed and may be utilized by attackers.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5631
Vulnerability details
A vulnerability was determined in D-Link DIR-823X 250416. Affected by this issue is the function sub_424D20 of the file /goform/set_ipv6. Executing a manipulation can lead to os command injection. It is possible to launch the attack remotely. The exploit has…
more
been publicly disclosed and may be utilized.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection directly enables arbitrary Unix shell / network device CLI execution (T1059.004/008) on the router; the public-facing web form also maps to T1190 for initial access when admin credentials are available.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly blocks OS command injection in /goform/set_ipv6 by validating and sanitizing all input to sub_424D20 before execution.
Limits the high-privilege account required for exploitation, reducing the attack surface for remote command injection on the DIR-823X.
Requires prompt application of vendor patches to eliminate the publicly disclosed command-injection flaw in firmware 250416.