CVE-2025-12259: high-severity vulnerability in TOTOLINK A3300R
TOTOLINK A3300R POST Parameter cstecgi.cgi setScheduleCfg stack-based overflow
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 1.0%
A flaw has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. The affected element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. This manipulation of the argument recHour causes stack-based buffer overflow. It is possible to initiate the attack remotely. 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 · A3300RRelated CVEs — TOTOLINK A3300R
In the same product, most dangerous first.
CVE-2024-7331HIGHTOTOLINK A3300R cstecgi.cgi UploadCustomModule buffer overflowEPSS 1.2%CVE-2025-12241HIGHTOTOLINK A3300R POST Parameter cstecgi.cgi setLanguageCfg stack-based overflowEPSS 1.0%CVE-2025-12260HIGHTOTOLINK A3300R POST Parameter cstecgi.cgi setSyslogCfg stack-based overflowEPSS 1.0%CVE-2025-12258HIGHTOTOLINK A3300R POST Parameter cstecgi.cg setOpModeCfg stack-based overflowEPSS 1.0%CVE-2025-12240HIGHTOTOLINK A3300R cstecgi.cgi setDmzCfg buffer overflowEPSS 0.8%CVE-2025-12239HIGHTOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflowEPSS 0.8%