D-Link DWR-M961 devices with hardware version C1 and software — CVE-2026-71958 (Critical)

Date Aug 8, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product D-Link · DWR-M961 devices with hardware version C1 and software

CVE CVE-2026-71958

Critical vendor advisory CVE-2026-71958

Summary

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.

Why it matters

This CVE carries a CRITICAL severity rating (CVSS 9.8) in D-Link DWR-M961 devices with hardware version C1 and software. Patch or mitigate promptly.

Operator check

Review CVE-2026-71958 in your asset inventory. Apply patches per vendor guidance and verify DWR-M961 devices with hardware version C1 and software is not exposed. CVSS score: 9.8.

Sources

NVD — CVE-2026-71958 Source reference Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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