What’s Vulnerable › Vulnerabilities

CVE-2026-1686: Totolink A3600R app.so setAppEasyWizardConfig buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-30 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• TOTOLINK A3600R: 5.9c.4959

References

• https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md
• https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md#poc
• https://vuldb.com/?ctiid.343480
• https://vuldb.com/?id.343480
• https://vuldb.com/?submit.740888
• https://www.totolink.net/

Get alerted when CVE-2026-1686 or the next vulnerability affects your stack