Vulnerability · Published Jan 30, 2026 · Assigned by VulDB
CVE-2026-1686Totolink A3600R app.so setAppEasyWizardConfig buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in A3600R from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.8%top 43.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-343480 | Totolink A3600R app.so setAppEasyWizardConfig buffer overflow vdb-entry, technical-description
- VDB-343480 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #740888 | TOTOLINK A3600R V5.9c.4959 Buffer Overflow third-party-advisory
- https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md related
- https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md#poc exploit
- https://www.totolink.net/ product