Stack-based Buffer Overflow in D-Link Router Product
CVE-2025-5969

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5969?

A significant vulnerability exists in the D-Link DIR-632 router, specifically identified in the HTTP POST Request Handler function. This issue allows for a stack-based buffer overflow, which can be exploited remotely by attackers. Given that this vulnerability affects devices that are no longer supported by the vendor, users are at an increased risk. As public disclosures of this exploit have been made, it is imperative for affected users to be vigilant and consider upgrading their devices to ensure network security.

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-2025-5969 - Proof of Concept

References

https://vuldb.com/?id.311845
vdb-entrytechnical-description
https://vuldb.com/?ctiid.311845
signaturepermissions-required
https://vuldb.com/?submit.592336
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-2025-5969 : Stack-based Buffer Overflow in D-Link Router Product