Buffer Overflow Vulnerability in TOTOLINK EX1200T Product
CVE-2025-5911

8.7HIGH

Key Information:

Vendor

Totolink
Status
Ex1200t
Vendor
CVE Published:
10 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5911?

A buffer overflow vulnerability exists in the TOTOLINK EX1200T router, specifically within the HTTP POST Request Handler, affecting versions up to 4.1.2cu.5232_B20210713. This vulnerability can be remotely exploited, allowing attackers to manipulate the functionality associated with the /boafrm/formDMZ file, potentially leading to unauthorized data access or service disruption. Due to public disclosure, it is imperative to apply security updates to mitigate this risk effectively.

Affected Version(s)

EX1200T 4.1.2cu.5232_B20210713

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-2025-5911 - Proof of Concept

References

https://vuldb.com/?id.311684
vdb-entry
https://vuldb.com/?ctiid.311684
signaturepermissions-required
https://vuldb.com/?submit.592272
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

wang_lun (VulDB User)
.
CVE-2025-5911 : Buffer Overflow Vulnerability in TOTOLINK EX1200T Product