EUVD-2026-26939CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
8DescriptionNVD
A weakness has been identified in Totolink N300RH 3.2.4-B20220812. Affected by this issue is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Executing a manipulation of the argument FileName can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.
AnalysisAI
Buffer overflow in Totolink N300RH router firmware 3.2.4-B20220812 enables authenticated remote attackers to achieve code execution via crafted FileName parameter to the setUpgradeFW function in /cgi-bin/cstecgi.cgi. Public exploit code is available (documented in Notion). …
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RemediationAI
Within 24 hours: Inventory all Totolik N300RH devices running firmware 3.2.4-B20220812 in your environment and document network placement. Within 7 days: Contact Totolik support to determine if patched firmware is available; implement network segmentation to restrict administrative access to affected routers to authorized personnel only. …
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External POC / Exploit Code
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