Which versions of D-Link DWR-M961 are affected by CVE-2026-71955?

D-Link DWR-M961 4G LTE routers running firmware before version 1.1.5_C1_202607071108 are vulnerable to remote unauthenticated command injection that grants attacker root access to the device.. A patch is available.

How to fix or mitigate CVE-2026-71955?

Within 24 hours, conduct an inventory scan to identify all D-Link DWR-M961 devices in production and determine firmware versions across all deployments. Within 7 days, apply vendor patch SAP10512 to all devices running firmware versions prior to 1.1.5_C1_202607071108, prioritizing devices in critical network positions. Verify completion of patching across all devices by the end of 30 days.

D-Link DWR-M961 CVE-2026-71955

Q: What is the CVSS score of CVE-2026-71955?

CVE-2026-71955 has a CVSS 4.0 base score of 9.3 (Critical). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 2.1%.

EUVD-2026-54807 CRITICAL

OS Command Injection (CWE-78)

2026-08-08 VulnCheck

GHSA-7rr2-x62c-257c

Command Injection D-Link Dwr M961 D Link Corporation

9.3

CVSS 4.0 · Vendor: VulnCheck

Severity by source

Vendor (VulnCheck) PRIMARY

9.3 CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

9.8 CRITICAL

Remote unauthenticated HTTP request to a fixed WPS endpoint (AV:N/AC:L/PR:N/UI:N) yields root command execution, giving full C/I/A loss on the device; scope unchanged.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Aug 08, 2026 - 17:35 vuln.today

CVE Published

Aug 08, 2026 - 16:55 cve.org

CRITICAL 9.3

DescriptionCVE.org

D-Link DWR-M961 devices with hardware version C1 and firmware version before 1.1.5_C1_202607071108 contain a command injection vulnerability in the /boafrm/formWsc interface. A remote attacker can inject arbitrary malicious commands into the localPin field, resulting in command execution with root privileges.

AnalysisAI

OS command injection in the D-Link DWR-M961 4G AC1200 LTE router (hardware C1, firmware before 1.1.5_C1_202607071108) lets a remote, unauthenticated attacker inject shell commands through the localPin parameter of the /boafrm/formWsc (WPS) endpoint, yielding command execution as root. The flaw carries a CVSS 4.0 score of 9.3 and was reported by VulnCheck; a vendor patch exists (SAP10512), but there is no public exploit identified at time of analysis and it is not listed in CISA KEV.

Technical ContextAI

The DWR-M961 is a consumer/SOHO 4G LTE router running an embedded Linux web stack served by the boa web server, where CGI-style handlers are exposed under the /boafrm/ path. The vulnerable /boafrm/formWsc handler processes Wi-Fi Protected Setup (WPS) configuration input; the localPin field (normally the device/enrollee WPS PIN) is passed into a shell context without sanitization. This is a classic CWE-78 (Improper Neutralization of Special Elements used in an OS Command) issue, where attacker-controlled input reaches a system()/popen()-style call, so shell metacharacters (;, |, backticks, $()) break out of the intended command and run arbitrary binaries. Because the boa/CGI process on these devices typically runs as root, injected commands inherit full root privileges. Affected scope per CPE is cpe:2.3:a:d-link_corporation:dwr-m961, hardware revision C1.

RemediationAI

Apply the D-Link fix by upgrading DWR-M961 (hardware C1) to firmware 1.1.5_C1_202607071108 or later, per D-Link advisory SAP10512 (https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10512). Until the update is deployed, reduce exposure with concrete compensating controls: disable remote/WAN management of the web UI so /boafrm/ is not reachable from the internet (trade-off: administrators lose off-LAN access); if WPS is not required, disable WPS to limit reaching the formWsc code path (trade-off: users must configure Wi-Fi clients manually); and restrict access to the router's HTTP(S) management interface to trusted management hosts/VLANs via ACLs or firewall rules (trade-off: added network complexity). These controls narrow the attack surface but are not a substitute for the firmware update.