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D-Link CVE-2026-4486

| EUVD-2026-13702 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-03-20 VulDB
7.4
CVSS 4.0 · NVD
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NVD PRIMARY
7.4 HIGH
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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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
X

Lifecycle Timeline

4
PoC Detected
Apr 03, 2026 - 19:35 vuln.today
Public exploit code
EUVD ID Assigned
Mar 20, 2026 - 14:15 euvd
EUVD-2026-13702
Analysis Generated
Mar 20, 2026 - 14:15 vuln.today
CVE Published
Mar 20, 2026 - 14:02 nvd
HIGH 7.4

DescriptionCVE.org

A vulnerability was found in D-Link DIR-513 1.10. This affects the function formEasySetPassword of the file /goform/formEasySetPassword of the component Web Service. The manipulation of the argument curTime results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Remote code execution in D-Link DIR-513 1.10 via stack-based buffer overflow in the /goform/formEasySetPassword endpoint allows unauthenticated attackers to achieve full system compromise through a malicious curTime parameter. Public exploit code exists for this vulnerability, and affected devices are no longer receiving security updates from the vendor. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Send HTTP request to /goform/formEasySetPassword
Exploit
Inject oversized curTime parameter
Execution
Trigger stack buffer overflow
Impact
Execute arbitrary code on device

Vulnerability AssessmentAI

Exploitation Requires authenticated access to D-Link DIR-513 firmware version 1.10 Web Service. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This vulnerability presents a significant real-world risk despite requiring low-privilege authentication (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained valid credentials to the router's web interface (through credential stuffing, default passwords, or prior compromise) connects to the device over the network and accesses the /goform/formEasySetPassword endpoint. The attacker crafts a malicious HTTP request with an oversized curTime parameter designed to overflow the stack buffer, overwriting the return address with a pointer to shellcode embedded in the payload. …
Remediation Since the D-Link DIR-513 is end-of-life and no security patches will be released (Remediation Level: Unavailable), the primary remediation is to immediately replace the affected device with a currently supported router model from D-Link or another vendor. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all D-Link DIR-513 devices in production and isolate any identified units from critical network segments. …

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CVE-2026-4486 vulnerability details – vuln.today

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