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.

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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)
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