CVE-2026-124058: critical vulnerability in TOTOLINK CA300-PoE
TOTOLINK CA300-PoE cstecgi.cgi setWiFiRepeaterConfig 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 weakness has been identified in TOTOLINK CA300-PoE 6.2c.884. Affected is the function setWiFiRepeaterConfig of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument ApCliKeyStr can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.
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-2026-124059CRITICALTOTOLINK CA300-PoE cstecgi.cgi setWiFiWdsAddConfig buffer overflowEPSS —