CVE-2026-71958

CRITICAL CVSS 4.0: 9.3
Updated Aug 08, 2026
D-Link
Parameter Value
CVSS 9.3 (CRITICAL)
Type CWE-120 (Buffer Copy without Checking Size)
Vendor D-Link
Public PoC No

D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the quicksetup.cgi interface. A remote attacker can write overly long strings to the test4, ssid2, and username fields and execute arbitrary commands by crafting a specific payload, or cause the device to crash.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products

d-link corporation:dwr-m961