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CVE-2026-6157

HIGH CVSS 4.0: 7.4 EPSS 0.09%
Updated Apr 13, 2026
Parameter Value
CVSS 7.4 (HIGH)
Type CWE-120 (Buffer Copy without Checking Size), CWE-119 (Buffer Overflow)
Public PoC No

A vulnerability was detected in Totolink A800R 4.1.2cu.5137_B20200730. This impacts the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. The manipulation of the argument apcliSsid results in buffer overflow.

The attack can be executed remotely. The exploit is now public and may be used.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0