CVE-2026-2155: D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-08 · updated 2026-06-17
Weakness: CWE-77

Description

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.

Affected products

D-Link DIR-823X: 250416

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/

Get alerted when CVE-2026-2155 or the next vulnerability affects your stack