What is CVE-2026-6168?

CVE-2026-6168 is a high-severity vulnerability in Totolink A7000r, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. 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.

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 exploitation of the attack is possible. The exploit has been published and may be used.

Vulnerability class: Buffer Overflow

Published 2026-04-13 · last modified 2026-10-26.

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.

EPSS exploit prediction

EPSS: 0.006 (47.4th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.006 · change: -0.002

Affected products

Totolink A7000r — versions 9.1.0u.6115

Weakness classification (CWE)

References

vuldb.com/vuln/357056 (technical-description, vdb-entry)
vuldb.com/vuln/357056/cti (signature, permissions-required)
vuldb.com/submit/797193 (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 Improper Restriction of Operations within the Bounds of a Memory Buffer. 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.