EUVD-2026-25724CVSS 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 Tenda F456 1.0.0.5. This vulnerability affects the function fromPptpUserAdd of the file /goform/PPTPDClient of the component httpd. Executing a manipulation of the argument opttype/usernamewith can lead to buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.
AnalysisAI
Buffer overflow in Tenda F456 router firmware 1.0.0.5 allows authenticated remote attackers to execute arbitrary code via malformed PPTP client parameters. The vulnerability resides in the fromPptpUserAdd function of the httpd web server component, specifically through manipulation of the opttype/usernamewith arguments. …
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RemediationAI
Within 24 hours: Inventory all Tenda F456 routers in production, verify firmware version, and document internet exposure. Within 7 days: Disable PPTP functionality if not operationally required; enforce strong unique administrative credentials; restrict web interface access to trusted networks only via firewall rules. …
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External POC / Exploit Code
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