EUVD-2026-21720Severity by source
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
Primary rating from NVD · only source for this CVE.
CVSS 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
7DescriptionCVE.org
A flaw has been found in Tenda F451 1.0.0.7. Affected by this vulnerability is the function WrlclientSet of the file /goform/WrlclientSet of the component httpd. This manipulation of the argument GO causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been published and may be used.
AnalysisAI
Stack-based buffer overflow in Tenda F451 router firmware version 1.0.0.7 allows authenticated remote attackers to achieve full system compromise via crafted HTTP requests to the wireless client configuration endpoint. The vulnerability (CVSS 8.8) exists in the WrlclientSet function within the httpd service and requires only low-privilege authentication. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Tenda F451 firmware version 1.0.0.7. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is HIGH for deployed Tenda F451 routers, though targeting requires authentication. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained low-privilege credentials (through credential stuffing, default password exploitation, or previous compromise) authenticates to the Tenda F451 web administration interface from the internet or local network. They craft a malicious HTTP POST request to the /goform/WrlclientSet endpoint with an oversized 'GO' parameter designed to overflow the stack buffer in the WrlclientSet function. … |
| Remediation | Users of Tenda F451 routers running firmware 1.0.0.7 should immediately check for firmware updates through the Tenda support portal at https://www.tenda.com.cn/ and apply any available security patches. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Tenda F451 routers in production and document current firmware versions. …
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