CVE-2026-124059: critical vulnerability in TOTOLINK CA300-PoE
TOTOLINK CA300-PoE cstecgi.cgi setWiFiWdsAddConfig buffer overflow
Published
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25Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.4
A security vulnerability has been detected in TOTOLINK CA300-PoE 6.2c.884. Affected by this vulnerability is the function setWiFiWdsAddConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ApCliKeyStr leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Affected products
TOTOLINK · CA300-PoERelated CVEs — TOTOLINK CA300-PoE
In the same product, most dangerous first.
CVE-2024-7217MEDIUMTOTOLINK CA300-PoE cstecgi.cgi loginauth buffer overflowEPSS 7.1%CVE-2025-6621MEDIUMTOTOLINK CA300-PoE ap.so QuickSetting os command injectionEPSS 2.5%CVE-2025-6620MEDIUMTOTOLINK CA300-PoE upgrade.so setUpgradeUboot os command injectionEPSS 2.5%CVE-2025-6619MEDIUMTOTOLINK CA300-PoE upgrade.so setUpgradeFW os command injectionEPSS 2.5%CVE-2025-6618MEDIUMTOTOLINK CA300-PoE wps.so SetWLanApcliSettings os command injectionEPSS 2.5%CVE-2026-124058CRITICALTOTOLINK CA300-PoE cstecgi.cgi setWiFiRepeaterConfig buffer overflowEPSS —