Remote Null Pointer Dereference in TOTOLINK EX1200L
CVE-2026-75012

7.1HIGH

Key Information:

Vendor

Totolink
Status
Ex1200l
Vendor
CVE Published:
17 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-75012?

A vulnerability exists in the Password Configuration Handler of the TOTOLINK EX1200L router, specifically in the setPasswordCfg function of the cgi-bin/cstecgi.cgi file. This issue leads to a null pointer dereference, allowing remote attackers to exploit the vulnerability. Public disclosure of the exploit means that the risk of unauthorized access and manipulation remains significant, demanding immediate attention and patching.

Affected Version(s)

EX1200L 9.3.5u.6146_B20201023

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-2026-75012 - Proof of Concept

References

https://vuldb.com/vuln/391272
vdb-entrytechnical-description
https://vuldb.com/vuln/391272/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-75012
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
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

yuxin_wang (VulDB User)
.