CVE-2026-2155

D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection

CVSS 8.6 HIGHEPSS 3.8%CWE-77 CWE-78

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.6EPSS 3.8%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

08 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A security flaw has been discovered in D-Link DIR-823X 250416. The affected element is the function sub_4208A0 of the file /goform/set_dmz of the component Configuration Handler. The manipulation of the argument dmz_host/dmz_enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Affected products

D-Link · DIR-823X

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References

https://github.com/master-abc/cve/issues/32 https://vuldb.com/?ctiid.344857 https://vuldb.com/?id.344857 https://vuldb.com/?submit.748236 https://vuldb.com/?submit.750038 https://www.dlink.com/