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CVE-2026-6168

TOTOLINK A7000R cstecgi.cgi setWiFiEasyGuestCfg stack-based overflow

CVSS 8.7 HIGHEPSS 0.6%CWE-119CWE-121
Vexday Risk Score
41Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 8.7EPSS 0.6%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
13 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
TOTOLINK · A7000R
public PoCs found — 1
cve_referencegithub.com/zhuchan770/vulnerability/blob/main/A7000R/setWiFiEasyGuestCfg/ToToLink%20A7000R%20setWiFiEasyGuestCfg%20338996b67c9780b89829d0ea70058788.mdunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/zhuchan770/vulnerability/blob/main/A7000R/setWiFiEasyGuestCfg/ToToLink%20A7000R%20setWiFiEasyGuestCfg%20338996b67c9780b89829d0ea70058788.mdhttps://vuldb.com/submit/797193https://vuldb.com/vuln/357056https://vuldb.com/vuln/357056/ctihttps://www.totolink.net/