CVE-2026-4194

HIGH

D-Link DNS-1550-04 system_mgr.cgi cgi_set_wto access control

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. The impacted element is the function cgi_set_wto of the file /cgi-bin/system_mgr.cgi. Performing a manipulation results in improper access controls. Remote exploitation of the attack is possible. The exploit is now public and may be used.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-351106 | D-Link DNS-1550-04 system_mgr.cgi cgi_set_wto access control
https://vuldb.com/?id.351106
Signature, Permissions Required signature permissions-required
VDB-351106 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/?ctiid.351106
Third Party Advisory third-party-advisory
Submit #769853 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Authentication Bypass Issues
https://vuldb.com/?submit.769853
Product product
https://www.dlink.com/

Scores

CVSS v3 7.3
EPSS 0.0124
EPSS Percentile 65.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-266 CWE-284
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