Stack-Based Buffer Overflow in D-Link DCS-5020L
CVE-2025-5215

8.7HIGH

Key Information:

Vendor

D-link
Status
Dcs-5020l
Vendor
CVE Published:
27 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5215?

A vulnerability in the D-Link DCS-5020L webcam's websReadEvent function allows for a stack-based buffer overflow through manipulation of the Authorization argument. This issue is remotely exploitable and poses significant risks to impacted devices, particularly those that are no longer supported by D-Link. Such vulnerabilities can lead to unauthorized access, data leakage, and potential takeover of the device, highlighting the necessity for prompt updates and security measures.

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Affected Version(s)

DCS-5020L 1.01_B2

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-2025-5215 - Proof of Concept

References

https://vuldb.com/?id.310311
vdb-entrytechnical-description
https://vuldb.com/?ctiid.310311
signaturepermissions-required
https://vuldb.com/?submit.582935
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

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