Buffer overflow in Totolink A7000r
CVE-2026-6168
A flaw has been found in TOTOLINK A7000R up to 9.1.0u.6115. The affected element is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ssid5g causes stack-based buffer overflow. Remote expl…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (9.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). 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.
Affected products
- Totolink A7000r — versions 9.1.0u.6115
Weakness classification (CWE)
References
- VDB-357056 | TOTOLINK A7000R cstecgi.cgi setWiFiEasyGuestCfg stack-based overflow (vdb-entry, technical-description)
- VDB-357056 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #797193 | TOTOLINK A7000R <=V9.1.0u.6115 Stack-based Buffer Overflow (third-party-advisory)
- github.com/zhuchan770/vulnerability/blob/main/A7000R/setWiFiEasyGuestCfg/ToToLi… (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-6168?
- CVE-2026-6168 is a high-severity vulnerability in Totolink A7000r, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-04-13.
- How severe is CVE-2026-6168?
- High severity. CVSS v3 base score is 8.8 out of 10.