CVE-2025-12239: high-severity vulnerability in TOTOLINK A3300R
TOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.8%
A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.
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-2025-12259HIGHTOTOLINK A3300R POST Parameter cstecgi.cgi setScheduleCfg 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%