Stack-Based Buffer Overflow in D-Link DIR-513 Web Service
CVE-2026-4486

8.7HIGH

Key Information:

Vendor

D-link
Status
Dir-513
Vendor
CVE Published:
20 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4486?

A vulnerability exists in D-Link DIR-513 version 1.10, specifically within the formEasySetPassword function of the /goform/formEasySetPassword component. This flaw allows an attacker to manipulate the curTime argument, leading to a stack-based buffer overflow. The exploit can potentially be executed remotely, making it particularly critical for devices lacking ongoing support from the vendor. Users of the affected version should take immediate precautions to mitigate risks associated with this vulnerability.

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Affected Version(s)

DIR-513 1.10

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-4486 - Proof of Concept

References

https://vuldb.com/?id.352009
vdb-entrytechnical-description
https://vuldb.com/?ctiid.352009
signaturepermissions-required
https://vuldb.com/?submit.773537
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

AttackingLin (VulDB User)
JSON
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