Vulnerability · Published Apr 13, 2026 · Assigned by VulDB
CVE-2026-6157Totolink A800R app.so setAppEasyWizardConfig buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in A800R from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.5%top 59.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
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-357037 | Totolink A800R app.so setAppEasyWizardConfig buffer overflow vdb-entry, technical-description
- VDB-357037 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #793114 | TOTOLINK A800R V4.1.2cu.5137_B20200730 Buffer Overflow third-party-advisory
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A800R/01_Buffer_Overflow_setAppEasyWizardConfig.md exploit
- https://www.totolink.net/ product