Buffer Overflow Vulnerability in D-Link Router Firmware
CVE-2025-6370

8.7HIGH

Key Information:

Vendor

D-link
Status
Dir-619l
Vendor
CVE Published:
20 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6370?

A stack-based buffer overflow vulnerability has been identified in the D-Link DIR-619L router, specifically within the formWlanGuestSetup function in the /goform/formWlanGuestSetup file. This vulnerability allows remote attackers to exploit the flaw by manipulating the curTime argument, potentially leading to unauthorized access or execution of arbitrary code. It is important to note that this exploit exclusively impacts devices that are no longer supported by D-Link, amplifying the risks associated with using outdated firmware. Immediate attention is advised to mitigate potential threats.

Affected Version(s)

DIR-619L 2.06B01

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-2025-6370 - Proof of Concept

References

https://vuldb.com/?id.313363
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313363
signaturepermissions-required
https://vuldb.com/?submit.597423
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

pjq123 (VulDB User)
.
CVE-2025-6370 : Buffer Overflow Vulnerability in D-Link Router Firmware