CVE-2026-2155: high-severity vulnerability in D-Link DIR-823X
D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 4.6%
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-823XRelated CVEs — D-Link DIR-823X
In the same product, most dangerous first.
CVE-2026-1125MEDIUMD-Link DIR-823X set_wifidog_settings sub_412E7C command injectionEPSS 15.7%CVE-2025-1103HIGHD-Link DIR-823X HTTP POST Request set_wifi_blacklists null pointer dereferenceEPSS 14.1%CVE-2026-2142HIGHD-Link DIR-823X set_qos sub_420688 os command injectionEPSS 6.6%CVE-2026-2081MEDIUMD-Link DIR-823X set_password os command injectionEPSS 6.4%CVE-2025-10634MEDIUMD-Link DIR-823X Environment Variable goahead sub_412E7C command injectionEPSS 6.3%CVE-2026-2082MEDIUMD-Link DIR-823X set_mac_clone os command injectionEPSS 5.9%