EUVD-2026-33510
GHSA-jwrp-439h-fx3w
Severity 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
5DescriptionCVE.org
A flaw has been found in Tenda W12 3.0.0.7(4763). This affects the function cgistaKickOff of the file /bin/httpd. Executing a manipulation of the argument staMac can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.
AnalysisAI
Stack-based buffer overflow in Tenda W12 firmware 3.0.0.7(4763) allows remote attackers with low privileges to corrupt memory via the staMac parameter processed by the cgistaKickOff function in /bin/httpd. Publicly available exploit code exists (hosted at cdn2.v50to.cc), elevating practical risk despite no current CISA KEV listing. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the W12 administrative HTTP daemon (/bin/httpd) and low-privilege authenticated access to the web management interface (CVSS PR:L), meaning the attacker must possess valid credentials of at least an unprivileged management role. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Risk signals are mixed but lean toward elevated practical concern. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with low-privilege credentials to the W12 web UI (or who has obtained them via default/weak password reuse) sends a crafted HTTP request to the cgistaKickOff handler with an oversized staMac parameter, overflowing the stack buffer in /bin/httpd. Using the publicly available PoC archive, the attacker overwrites the saved return address to redirect execution to embedded shellcode, gaining code execution as the httpd process - typically root on this class of device - and pivoting into the internal wireless network. |
| Remediation | No vendor-released patch identified at time of analysis - Tenda has not published an advisory or fixed firmware version referenced in the available data, so monitor https://www.tenda.com.cn/ for a firmware update superseding 3.0.0.7(4763). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Inventory all Tenda W12 devices and identify those running firmware 3.0.0.7(4763) or earlier; restrict network access to management interfaces via firewall ACLs. …
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