CVE-2026-1686

HIGH

Totolink A3600r Firmware - Memory Corruption

Title source: rule

Description

A security flaw has been discovered in Totolink A3600R 5.9c.4959. This issue affects the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. Performing a manipulation of the argument apcliSsid results in buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

References (6)

[Exploit, Third Party Advisory] https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md

View Exploit ZIP pw:eip

[Exploit] https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md#poc

[Permissions Required, VDB Entry] https://vuldb.com/?ctiid.343480

[Third Party Advisory, VDB Entry] https://vuldb.com/?id.343480

[Third Party Advisory, VDB Entry] https://vuldb.com/?submit.740888

[Product] https://www.totolink.net/

Scores

CVSS v3 8.8

EPSS 0.0017

EPSS Percentile 38.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-119 CWE-120

Status published

Affected Products (1)

totolink/a3600r_firmware

Timeline

Published Jan 30, 2026

Tracked Since Feb 18, 2026