What is the CVSS score of CVE-2026-6014?

CVE-2026-6014 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. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-6014?

Yes, a public proof-of-concept exploit is available for CVE-2026-6014. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-6014?

Within 24 hours: Identify all D-Link DIR-513 devices running firmware 1.10 in your network and document their business function and connectivity. Within 7 days: Implement network segmentation to isolate affected routers from critical systems; restrict administrative access to the /goform/formAdvanceSetup endpoint via firewall rules; consider credential rotation for any accounts with access to these devices. Within 30 days: Develop a replacement plan and execute migration away from DIR-513 hardware to vendor-supported router models with current security patches.

Dir 513 CVE-2026-6014

EUVD-2026-21310 HIGH

Classic Buffer Overflow (CWE-120)

2026-04-10 VulDB

GHSA-ch75-q946-9j9r

Buffer Overflow D-Link Dir 513 D-Link

7.4

CVSS 4.0 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Authenticate to D-Link DIR-513 web interface
Delivery

Send POST request to /goform/formAdvanceSetup
Exploit

Inject oversized webpage parameter
Execution

Trigger buffer overflow in formAdvanceSetup function
Impact

Execute arbitrary code on router

Vulnerability Assessment

Weakness	CWE CWE-120 ASVS 5.0 V15 - Secure Coding and Architecture Buffer copy size validation MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	D-Link DIR-513 firmware version 1.10 (end-of-life product). Requires authenticated user access to POST to /goform/formAdvanceSetup endpoint with malicious 'webpage' parameter. Remote network access required; no victim interaction needed.
Impact	CVSS 8.8 reflects high-impact buffer overflow with unauthenticated network access and confirmed public exploit code. However, DIR-513 is end-of-life, limiting real-world blast radius to legacy deployments. Elevated observed exploitation activity drives priority for organizations retaining legacy D-Link infrastructure; otherwise, low organizational risk.
Exploit ScenarioDerived	Unauthenticated attacker sends crafted POST request to /goform/formAdvanceSetup with oversized webpage parameter, triggering stack buffer overflow. Publicly available exploit code enables remote code execution without authentication or user interaction.

Monitor Track and reassess. Why: Vendor states no customer action required.

No patch listed yet 0.0% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Apr 10, 2026

Buffer overflow in D-Link DIR-513 firmware 1.10 formAdvanceSetup function enables authenticated remote attackers to achieve arbitrary code execution with high confidentiality, integrity, and availability impact. The vulnerability resides in POST request handling at /goform/formAdvanceSetup endpoint, where insufficient input validation of the 'webpage' parameter triggers memory corruption. Publicly available exploit code exists. This router model is end-of-life with no vendor support.

RemediationAI

No vendor-released patch identified at time of analysis. D-Link has discontinued support for DIR-513 hardware, confirmed end-of-life status per vendor documentation at https://www.dlink.com/. Organizations must immediately decommission affected devices and replace with currently supported router models receiving active firmware updates. Temporary risk reduction: restrict administrative interface access to trusted management networks only, disable remote administration features, and implement network segmentation to isolate vulnerable devices. Do not deploy workarounds as permanent solutions-hardware replacement is the only sustainable mitigation for end-of-life network infrastructure. Consult VulDB advisory https://vuldb.com/vuln/356570 for attack surface analysis and technical indicators.

Affected VersionsENISA

DIR-513 1.10

Affected Packages

euvd dir_513 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classic stack-based buffer overflow (CWE-120) in legacy embedded web server. The formAdvanceSetup handler lacks bounds checking on user-supplied 'webpage' argument during POST processing, allowing authenticated attackers (PR:L) to overwrite adjacent memory regions. Network attack vector with low complexity (AV:N/AC:L) enables remote exploitation without user interaction.

Know when Dir 513 gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Vulnerable system: Confidentiality

High

Vulnerable system: Integrity

High

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

PoC Detected

Apr 10, 2026 - 05:16 vuln.today

Public exploit code

CVE Published

Apr 10, 2026 - 04:30 nvd

HIGH 7.4

DescriptionCVE.org

A flaw has been found in D-Link DIR-513 1.10. This issue affects the function formAdvanceSetup of the file /goform/formAdvanceSetup of the component POST Request Handler. This manipulation of the argument webpage causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Executive ViewAI

Why It Matters

CVE-2026-6014 is a high-severity buffer overflow affecting D-Link DIR-513 routers (firmware 1.10) that allows authenticated attackers to execute arbitrary code and fully compromise affected devices. Organizations operating these end-of-life routers face complete loss of confidentiality, integrity, and availability with no vendor patch available, requiring immediate inventory and remediation decisions.

Business Impact: High

Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict network access to /goform/formAdvanceSetup via WAF or firewall rules to deny POST requests with 'webpage' parameter; (2) Limit administrative access to these routers to a segregated management network; (3) Disable remote management interfaces if not operationally required; (4) Monitor for suspicious POST requests to the vulnerable endpoint; (5) Plan hardware replacement as end-of-life status precludes future security updates.

Threat Intelligence Overview

EPSS Score

0.0%

Top 86% exploitable

Exploit

POC

Public exploit code exists

Social Media

Sightings

Data Quality

7 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Vulnrichment CIRCL

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

Vendor states no customer action required

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision

Scheduled

Exploitation

Poc

System Exposure· derived

Open

Automatable

Human Impact

High

Technical Impact

Total

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +37

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.