CVE-2026-5215 D-Link DNS-1550-04 network_mgr.cgi cgi_get_ipv6 access control
An attacker can bypass access controls in the network management interface to read IPv6 configuration data on affected D-Link NAS devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5215?
CVE-2026-5215 is a medium-severity missing authorization vulnerability in Dlink Dns-320 Firmware, published on 31 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was identified 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. The impacted element is the function cgi_get_ipv6 of the file /cgi-bin/network_mgr.cgi. Such manipulation leads to improper access controls. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-5215?
It affects 20 products.
Products include Dlink Dnr-202l Firmware, Dlink Dnr-326 Firmware, Dlink Dns-1100-4 Firmware, Dlink Dns-1200-05 Firmware, Dlink Dns-120 Firmware, Dlink Dns-1550-04 Firmware and 14 more.
How do I fix CVE-2026-5215?
No fix has been published for CVE-2026-5215 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-5215 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5215 exists.
Other vulnerabilities in Dlink Dns-320 Firmware
- CVE-2024-3272 D-Link Multiple NAS Devices Use of Hard-Coded Credentials
- CVE-2024-3273 D-Link Multiple NAS Devices Command Injection
- CVE-2026-5211 D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow
- CVE-2026-5212 D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow
- CVE-2026-5213 D-Link DNS-1550-04 account_mgr.cgi cgi_adduser_to_session stack-based overflow
Sources
Also known as GHSA-477x-x394-p7g8.