CVE-2026-121597
TOTOLINK A950RG Easy Setup Wizard cstecgi.cgi setAppEasyWizardConfig stack-based overflow
A weakness has been identified in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This affects the function setAppEasyWizardConfig of the file /cgi-bin/cstecgi.cgi of the component Easy Setup Wizard Handler. Executing a manipulation of the argument functionType can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.
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/49d6ccded59379651568e0bdc6b5624c
exploit · CNA: VulDB
References
- https://vuldb.com/vuln/430439CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/430439/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-121597CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1022558CNA: VulDB · third-party-advisory
- https://gist.github.com/H3rmesk1t/49d6ccded59379651568e0bdc6b5624cCNA: VulDB · exploit
- https://www.totolink.net/CNA: VulDB · broken-link, product
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