What is the CVSS score of CVE-2026-2856?

CVE-2026-2856 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Dwr M960 Firmware are affected by CVE-2026-2856?

D-Link DWR-M960 routers running firmware 1.01.07 contain a critical vulnerability (CVSS 8.8) in the filter configuration endpoint that allows remote exploitation with no available patch.

Is there a public PoC exploit available for CVE-2026-2856?

Yes, a public proof-of-concept exploit is available for CVE-2026-2856. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2856?

Within 24 hours: Inventory all D-Link DWR-M960 devices in production and isolate affected units from critical network segments. Within 7 days: Implement network-level access controls to restrict traffic to the /boafrm/formFilter endpoint, deploy WAF rules to block malicious payloads targeting this function, and disable filter configuration functionality if operationally feasible. Within 30 days: Develop a device replacement roadmap prioritizing firmware upgrade alternatives or hardware migration to supported models with active security patching.

Dwr M960 Firmware CVE-2026-2856

HIGH

Buffer Overflow (CWE-119)

2026-02-20 cna@vuldb.com

Buffer Overflow D-Link Stack Overflow Dwr M960 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

PoC Detected

Feb 23, 2026 - 20:27 vuln.today

Public exploit code

CVE Published

Feb 20, 2026 - 21:19 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was found in D-Link DWR-M960 1.01.07. Affected by this vulnerability is the function sub_424AFC of the file /boafrm/formFilter of the component Filter Configuration Endpoint. The manipulation of the argument submit-url results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.

AnalysisAI

Stack-based buffer overflow in D-Link DWR-M960 firmware 1.01.07 Filter Configuration endpoint allows authenticated remote attackers to achieve full system compromise through a malicious submit-url parameter. Public exploit code exists for this vulnerability, and no patch is currently available. The attack requires valid credentials but executes with no user interaction needed.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Dwr-M960 Firmware. A vulnerability was found in D-Link DWR-M960 1.01.07. Affected by this vulnerability is the function sub_424AFC of the file /boafrm/formFilter of the component Filter Configuration Endpoint. The manipulation of the argument submit-url results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.