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

D-Link Buffer Overflow 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

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

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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to D-Link DWR-M960

Delivery

Access /boafrm/formFilter endpoint

Exploit

Inject oversized payload in submit-url parameter

Execution

Trigger stack buffer overflow

Impact

Execute arbitrary code with device privileges

Access

Authenticate to D-Link DWR-M960

Delivery

Access /boafrm/formFilter endpoint

Exploit

Inject oversized payload in submit-url parameter

Execution

Trigger stack buffer overflow

Impact

Execute arbitrary code with device privileges

Vulnerability AssessmentAI

Exploitation	D-Link DWR-M960 firmware version 1.01.07 with Filter Configuration endpoint accessible; requires valid authentication credentials (PR:L); vulnerable function sub_424AFC processes user-supplied submit-url parameter without bounds checking. Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, stack-based buffer overflow.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all D-Link DWR-M960 devices in production and isolate affected units from critical network segments. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-2856 vulnerability details – vuln.today

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Dwr M960 Firmware CVE-2026-2856

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

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External POC / Exploit Code