CVE-2026-121598
TOTOLINK A950RG Basic Wireless Configuration cstecgi.cgi strcpy stack-based overflow
A security vulnerability has been detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function strcpy of the file /cgi-bin/cstecgi.cgi of the component Basic Wireless Configuration Handler. The manipulation of the argument wepkey leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly 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/e283a4f3224cbd0a57d4392de60bd2c6
exploit · CNA: VulDB
References
- https://vuldb.com/vuln/430440CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/430440/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-121598CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1022559CNA: VulDB · third-party-advisory
- https://gist.github.com/H3rmesk1t/e283a4f3224cbd0a57d4392de60bd2c6CNA: VulDB · exploit
- https://www.totolink.net/CNA: VulDB · product
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