CVE-2026-4194

| EUVD-2026-12260 HIGH
2026-03-16 [email protected]
7.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Mar 16, 2026 - 14:30 vuln.today
EUVD ID Assigned
Mar 16, 2026 - 14:30 euvd
EUVD-2026-12260
CVE Published
Mar 16, 2026 - 14:20 nvd
HIGH 7.3

Tags

D-Link Dns Privilege Escalation Authentication Bypass

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.

Analysis

Improper access controls in D-Link NAS devices (DNS-120, DNS-323, DNS-345, DNS-1200-05, and others through firmware version 20260205) allow unauthenticated remote attackers to manipulate the cgi_set_wto function in /cgi-bin/system_mgr.cgi, potentially gaining unauthorized access or modifying system settings. Public exploit code exists for this vulnerability, and no patch is currently available.

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Remediation

Within 24 hours: Inventory all D-Link DNS/DNR devices in scope and assess network exposure; isolate affected devices to restricted networks if possible. Within 7 days: Implement network-level controls (WAF rules, IP whitelisting, VPN-only access) to restrict access to /cgi-bin/system_mgr.cgi; disable the affected cgi_set_wto function if feasible through device configuration. …

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Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +36
POC: 0

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CVE-2026-4194 vulnerability details – vuln.today
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