Buffer Overflow Vulnerability in TOTOLINK T10 Router by TOTOLINK
CVE-2025-5903

8.7HIGH

Key Information:

Vendor

Totolink
Status
T10
Vendor
CVE Published:
10 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5903?

The TOTOLINK T10 Router has a vulnerability in its setWiFiAclRules function within the /cgi-bin/cstecgi.cgi component of its POST Request Handler. This issue arises from unsafe handling of the 'desc' argument, leading to a buffer overflow. Attackers can exploit this vulnerability remotely, which may compromise the device's security and network integrity. Timely action is essential to protect against potential exploits that have already been disclosed.

Affected Version(s)

T10 4.1.8cu.5207

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-2025-5903 - Proof of Concept

References

https://vuldb.com/?id.311676
vdb-entrytechnical-description
https://vuldb.com/?ctiid.311676
signaturepermissions-required
https://vuldb.com/?submit.592247
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

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CVE-2025-5903 : Buffer Overflow Vulnerability in TOTOLINK T10 Router by TOTOLINK