MajorCritical vulnerability

CVE-2026-123959 (CVSS 8.5)

NVD · officialPublished Nov 7, 2026Risk 37/100EPSS 0.8%

A security flaw has been discovered in TOTOLINK CA300-PoE 6.2c.884. The impacted element is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument langType results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

Technical details

CVSS

8.5

AV:NetworkAC:LowPR:HighUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

Open primary source