Unrated severityNVD Advisory· Published Mar 16, 2026· Updated Mar 16, 2026
D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Setting stack-based overflow
CVE-2026-4214
Description
A flaw has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. This issue affects the function UPnP_AV_Server_Path_Setting of the file /cgi-bin/app_mgr.cgi. Executing a manipulation can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been published and may be used.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
23- Range: 20260205
- Range: 20260205
- Range: 20260205
- D-Link/DNS-726-4v5Range: 20260205
Patches
Vulnerability mechanics
References
5- github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_164/164.mdmitreexploit
- vuldb.commitrethird-party-advisory
- vuldb.commitresignaturepermissions-required
- vuldb.commitrevdb-entrytechnical-description
- www.dlink.commitreproduct
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