Stack-based Buffer Overflow in D-Link DIR-632 Router
CVE-2025-5912

8.7HIGH

Key Information:

Vendor

D-link
Status
Dir-632
Vendor
CVE Published:
10 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5912?

A vulnerability exists in the D-Link DIR-632 router where the HTTP POST Request Handler's do_file function is susceptible to stack-based buffer overflow. This flaw allows an attacker to exploit the device remotely, potentially leading to unauthorized access. The vulnerability is particularly concerning as it affects products that are no longer supported by the vendor, leaving users without critical security updates. Given the public disclosure of this vulnerability, remediation is urgent, especially for businesses relying on the affected product.

Affected Version(s)

DIR-632 FW103B08

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-2025-5912 - Proof of Concept

References

https://vuldb.com/?id.311686
vdb-entrytechnical-description
https://vuldb.com/?ctiid.311686
signaturepermissions-required
https://vuldb.com/?submit.592307
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

xiaobor123 (VulDB User)
.
CVE-2025-5912 : Stack-based Buffer Overflow in D-Link DIR-632 Router