CVE-2026-1686
HIGHTotolink A3600R 5.9c.4959 - Buffer Overflow via setAppEasyWizardConfig apcliSsid Argument
Title source: llmDescription
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)
Core 6
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.343480
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.343480
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.740888
Exploit, Third Party Advisory related
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md
Exploit exploit
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md#poc
Product product
https://www.totolink.net/
Scores
CVSS v3
8.8
EPSS
0.0066
EPSS Percentile
46.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-120
Status
published
Products (1)
totolink/a3600r_firmware
5.9c.4959
Published
Jan 30, 2026
Tracked Since
Feb 18, 2026