Improper Authentication in TOTOLINK T10 by TOTOLINK
CVE-2025-9533

6.9MEDIUM

Key Information:

Vendor

Totolink
Status
T10
Vendor
CVE Published:
27 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9533?

A vulnerability exists in the TOTOLINK T10 model 4.1.8cu.5241_B20210927 due to improper authentication in the /formLoginAuth.htm file. An attacker can exploit this weakness by manipulating the 'authCode' parameter, specifically using the input value '1'. This flaw allows for remote unauthorized access, which poses a significant security risk. The vulnerability has been publicly disclosed, raising concerns for potential exploitation.

Affected Version(s)

T10 4.1.8cu.5241_B20210927

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-2025-9533 - Proof of Concept

References

https://vuldb.com/?id.321552
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321552
signaturepermissions-required
https://vuldb.com/?submit.635941
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

aLtEr (VulDB User)
.
CVE-2025-9533 : Improper Authentication in TOTOLINK T10 by TOTOLINK