CVE-2026-4213

HIGH

D-Link DNS-1550-04 gui_mgr.cgi cgi_myfavorite_verify stack-based overflow

Title source: cna
STIX 2.1

Description

A vulnerability was 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 vulnerability affects the function cgi_myfavorite_del_user/cgi_myfavorite_verify of the file /cgi-bin/gui_mgr.cgi. Performing a manipulation results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

References (7)

Core 7
Core References
Product product
https://www.dlink.com/
Vdb Entry, Technical Description vdb-entry technical-description
VDB-351124 | D-Link DNS-1550-04 gui_mgr.cgi cgi_myfavorite_verify stack-based overflow
https://vuldb.com/?id.351124
Signature, Permissions Required signature permissions-required
VDB-351124 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/?ctiid.351124
Third Party Advisory third-party-advisory
Submit #770443 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Stack-based Buffer Overflow
https://vuldb.com/?submit.770443
Third Party Advisory third-party-advisory
Submit #770444 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Stack-based Buffer Overflow (Duplicate)
https://vuldb.com/?submit.770444

Scores

CVSS v3 8.8
EPSS 0.0074
EPSS Percentile 49.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-787 CWE-119 CWE-121
Status published
Products (40)
D-Link/DNR-202L 20260205
D-Link/DNR-322L 20260205
D-Link/DNR-326 20260205
D-Link/DNS-1100-4 20260205
D-Link/DNS-120 20260205
D-Link/DNS-1200-05 20260205
D-Link/DNS-1550-04 20260205
D-Link/DNS-315L 20260205
D-Link/DNS-320 20260205
D-Link/DNS-320L 20260205
... and 30 more
Published Mar 16, 2026
Tracked Since Mar 16, 2026