Exploit
D-Link DNS-1550-04 download_mgr.cgi Downloads_Schedule_Info stack-based overflow
CVE: CVE-2026-4212
Vendor: D-link
Product: DNS-120
CVSS: 8.7
Credits: pjqwudi (VulDB User)
Description:
A security vulnerability has been detected 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 affects the function Downloads_Schedule_Info of the file /cgi-bin/download_mgr.cgi. Such manipulation leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.
References:
• https://dbugs.ptsecurity.com/vulnerability/CVE-2026-4212
• https://vuldb.com/?id.351123
• https://vuldb.com/?ctiid.351123
• https://vuldb.com/?submit.770442
• https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_161/161.md
• https://www.dlink.com/
#dbugs_vuln
Post summary
The post details a stack‑buffer overflow in D‑Link DNS‑120 firmware (CVE‑2026‑4212), providing public references and a GitHub link that likely hosts PoC code, while not confirming any active exploitation.