EUVD-2026-70468
GHSA-w4wj-hq79-xrch
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
Login endpoint is unauthenticated (PR:N), network-reachable with no complexity (AV:N/AC:L), and buffer overflow yields full root impact on the device.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
7DescriptionCVE.org
A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formLogin of the file /boaform/formLogin of the component Boa Web Server. Executing a manipulation of the argument Username can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
AnalysisAI
Pre-authentication remote buffer overflow in Tenda HG10 router firmware version 300001138 allows unauthenticated network attackers to execute arbitrary code by sending an oversized Username value to the Boa Web Server's /boaform/formLogin endpoint. The formLogin function performs no bounds checking on the supplied credential field, enabling stack or heap corruption reachable directly from the WAN or LAN interface without any prior authentication. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation against default configurations of Tenda HG10 firmware 300001138. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Risk is elevated by the confluence of multiple high-severity signals: the CVSS 4.0 base vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H) confirms unauthenticated remote exploitation with no user interaction and full impact across all three security properties. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Tenda HG10 devices and identify those running firmware 300001138; assess network exposure, particularly WAN-facing deployments. …
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Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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