Buffer Overflow Vulnerability in TOTOLINK A702R Product
CVE-2025-9782

8.7HIGH

Key Information:

Vendor

Totolink
Status
A702r
Vendor
CVE Published:
1 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9782?

A remote code execution vulnerability exists in the TOTOLINK A702R router, specifically in the function sub_4466F8 within the file /boafrm/formOneKeyAccessButton. This vulnerability arises from insufficient validation of user input, allowing attackers to manipulate the submit-url argument, leading to a buffer overflow. As a result, this can compromise the integrity and functionality of the device, potentially granting unauthorized access. The exploit for this vulnerability has been publicly disclosed, emphasizing the urgency for patching and securing affected versions to protect against potential attacks.

Affected Version(s)

A702R 4.0.0-B20211108.1423

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-2025-9782 - Proof of Concept

References

https://vuldb.com/?id.322084
vdb-entrytechnical-description
https://vuldb.com/?ctiid.322084
signaturepermissions-required
https://vuldb.com/?submit.640990
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

rew1X (VulDB User)
.