CVE-2026-121599
TOTOLINK A950RG Multi-SSID Configuration cstecgi.cgi delWiFiMultipleConfig stack-based overflow
A vulnerability was detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. Affected is the function setWiFiMultipleConfig/delWiFiMultipleConfig of the file /cgi-bin/cstecgi.cgi of the component Multi-SSID Configuration. The manipulation of the argument wepkey2/wepkey3 results in stack-based buffer overflow. It is possible to launch the attack 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 |
|---|---|---|
| A950RG TOTOLINK |
4.1.2cu.5268_B20221104 (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:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P | CNA: VulDB |
| 3.1 / 9.9 critical |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R | CNA: VulDB |
| 3.0 / 9.9 critical |
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R | CNA: VulDB |
| 2.0 / 9.0 critical |
AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | CNA: VulDB |
Exploit evidence
- https://gist.github.com/H3rmesk1t/44673654282c9b21bc8971bab7e4b8a3
exploit · CNA: VulDB
References
- https://vuldb.com/vuln/430441CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/430441/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-121599CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1022561CNA: VulDB · third-party-advisory
- https://gist.github.com/H3rmesk1t/44673654282c9b21bc8971bab7e4b8a3CNA: VulDB · exploit
- https://www.totolink.net/CNA: VulDB · product
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