Buffer Overflow Vulnerability in D-Link DIR-825 Router
CVE-2025-10666

8.7HIGH

Key Information:

Vendor

D-link
Status
Dir-825
Vendor
CVE Published:
18 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-10666?

A security flaw has been identified in the D-Link DIR-825 router, specifically in the apply.cgi file's function sub_4106d4. This vulnerability arises from improper handling of the countdown_time argument, leading to a potential buffer overflow. It allows attackers to execute remote exploits on affected devices, particularly those that are no longer supported by D-Link. Users are strongly advised to assess their systems and consider remediation strategies to mitigate potential exploitation.

Affected Version(s)

DIR-825 2.0

DIR-825 2.1

DIR-825 2.2

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-2025-10666 - Proof of Concept

References

https://vuldb.com/?id.324787
vdb-entrytechnical-description
https://vuldb.com/?ctiid.324787
signaturepermissions-required
https://vuldb.com/?submit.652047
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

panda_0x1 (VulDB User)
.
CVE-2025-10666 : Buffer Overflow Vulnerability in D-Link DIR-825 Router