CVE-2026-121597: critical vulnerability in TOTOLINK A950RG
TOTOLINK A950RG Easy Setup Wizard cstecgi.cgi setAppEasyWizardConfig stack-based overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.4epss 0.6%
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.
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
Affected products
TOTOLINK · A950RGpublic PoCs found — 1
cve_referencegist.github.com/H3rmesk1t/49d6ccded59379651568e0bdc6b5624cunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — TOTOLINK A950RG
In the same product, most dangerous first.
CVE-2026-116505CRITICALTOTOLINK A950RG device-information udhcpd.leases getDeviceInfo command injectionEPSS 2.7%CVE-2026-114575CRITICALTOTOLINK A950RG product.so UploadCustomModule command injectionEPSS 2.2%CVE-2026-116506CRITICALTOTOLINK A950RG firewall.so apmib_set command injectionEPSS 1.9%CVE-2026-116504CRITICALTOTOLINK A950RG Cloud Upgrade upgrade.so setCloudUpgradeFW command injectionEPSS 1.5%CVE-2025-4496HIGHTOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflowEPSS 1.2%CVE-2026-15271HIGHTOTOLINK EX200 Web boa.conf least privilege violationEPSS 0.7%