Critical 9.9

A vulnerability was identified in TOTOLINK CA300-PoE 6.2c.884. The affected element is the...

CVE-2026-123958 First seen on SecPulse Nov 7, 18:00

Original description The description as published by the source.

A vulnerability was identified in TOTOLINK CA300-PoE 6.2c.884. The affected element is the function setLanConfig of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument lanDns/lanSecDns/langType leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.

Source: CVE.org (CVE Program・cvelistV5) NVD GitHub Advisory

References

Key facts

CVSS v3: Critical 9.9; CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4: High 8.6; CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Published: Nov 7, 2026
First seen on SecPulse: Nov 7, 18:00
GHSA: GHSA-c4px-fcrj-5258
CWE: CWE-119 CWE-120

NVD GitHub Advisory

Tags(click for explanation)

CWE

CWE-120 CWE-119

All

Totolink Ca300 Poe

Detection sources

NIST National Vulnerability DatabaseNov 7, 18:17
GitHub Security Advisories (Global)Nov 7, 18:30
CVE.org (CVE Program・cvelistV5)Nov 7, 18:00