CVE-2026-124060
TOTOLINK CA300-PoE cstecgi.cgi UploadCustomModule buffer overflow
A vulnerability was detected in TOTOLINK CA300-PoE 6.2c.884. Affected by this issue is the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument File results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| CA300-PoE TOTOLINK |
6.2c.884 (affected) | CNA: VulDB |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P | CNA: VulDB |
| 3.1 / 9.1 critical |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C | CNA: VulDB |
| 3.0 / 9.1 critical |
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C | CNA: VulDB |
| 2.0 / 8.3 high |
AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:C | CNA: VulDB |
Exploit evidence
References
- https://vuldb.com/vuln/432115CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/432115/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-124060CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1033757CNA: VulDB · third-party-advisory
- https://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-UploadCustomModule-3f953a41781f803fabf6e4b901fffb1f?source=copy_linkCNA: VulDB · exploit
- https://www.totolink.net/CNA: VulDB · product
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