Remote Stack-Based Buffer Overflow in D-Link DIR-513 Routers
CVE-2026-4555

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4555?

A vulnerability has been identified in the D-Link DIR-513 router, specifically within the formEasySetTimezone function in the boa component. This issue can lead to a stack-based buffer overflow when the curTime argument is manipulated. Attackers can exploit this vulnerability remotely, potentially compromising affected devices. It is important to note that this vulnerability impacts D-Link DIR-513 devices that are no longer supported by the vendor, and exploits leveraging this weakness have been publicly disclosed.

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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-2026-4555 - Proof of Concept

References

https://vuldb.com/?id.352382
vdb-entrytechnical-description
https://vuldb.com/?ctiid.352382
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https://vuldb.com/?submit.774936
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

LtzHust2 (VulDB User)
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