CVE-2026-123959 TOTOLINK CA300-PoE cstecgi.cgi setLanguageCfg buffer overflow
CriticalCVSS 9.4
- Published
- Updated
- Exploit status
- No public exploit known
Description
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| totolink ca300-poe firmware | = 6.2c.884 | No fix listed |
References
- VDB-432022 | TOTOLINK CA300-PoE cstecgi.cgi setLanguageCfg buffer overflow technical-description vdb-entry
- VDB-432022 | CTI Indicators (IOB, IOC, IOA) permissions-required signature
- CVE-2026-123959 | CVE Analysis and Report third-party-advisory
- Submit #1033721 | TOTOLINK CA300-PoE CA300-PoE_Firmware V6.2c.884 Buffer Overflow third-party-advisory
- lavender-bicycle-a5a.notion.site exploit
- www.totolink.net broken-link product