Which versions of D-Link are affected by CVE-2026-4188?

D-Link DIR-619L routers running firmware 2.06B01 are vulnerable to remote code execution through a stack buffer overflow, with public exploits now available.

Is there a public PoC exploit available for CVE-2026-4188?

Yes, a public proof-of-concept exploit is available for CVE-2026-4188. Prioritise patching immediately. EPSS: 0.0%.

D-Link CVE-2026-4188

Q: What is the CVSS score of CVE-2026-4188?

CVE-2026-4188 has a CVSS 4.0 base score of 7.4 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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: 0.0%.

EUVD-2026-12247 HIGH

Stack-based Buffer Overflow (CWE-121)

2026-03-15 VulDB

Buffer Overflow D-Link Stack Overflow

7.4

CVSS 4.0

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

Apr 22, 2026 - 21:37 vuln.today

cvss_changed

CVSS changed

Apr 22, 2026 - 21:37 NVD

8.8 (HIGH) 7.4 (HIGH)

PoC Detected

Mar 16, 2026 - 14:53 vuln.today

Public exploit code

EUVD ID Assigned

Mar 15, 2026 - 20:00 euvd

EUVD-2026-12247

Analysis Generated

Mar 15, 2026 - 20:00 vuln.today

CVE Published

Mar 15, 2026 - 19:32 nvd

HIGH 8.8

DescriptionNVD

A security flaw has been discovered in D-Link DIR-619L 2.06B01. The affected element is the function formSchedule of the file /goform/formSchedule of the component boa. Performing a manipulation of the argument curTime results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Remote code execution in D-Link DIR-619L 2.06B01 results from a stack-based buffer overflow in the formSchedule function when the curTime parameter is manipulated via the /goform/formSchedule endpoint. An authenticated remote attacker can exploit this vulnerability to achieve full system compromise, and public exploit code is currently available. …

RemediationAI

Within 24 hours: Identify all DIR-619L 2.06B01 devices in your environment and isolate them from production networks if possible; document affected systems and their criticality. Within 7 days: Develop a device replacement plan prioritizing internet-facing and critical network segments; implement compensating controls listed below for devices that cannot be immediately replaced. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-4188 vulnerability details – vuln.today

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D-Link CVE-2026-4188

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D-Link CVE-2026-4188

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External POC / Exploit Code