EUVD-2026-33512
GHSA-hgcw-qw4m-rwrh
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:N/VI:N/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
2DescriptionCVE.org
A vulnerability was found in Tenda W12 3.0.0.7(4763). This issue affects the function cgiSysWebTimeoutSet of the file /bin/httpd of the component Web Management Interface. The manipulation of the argument web_over_time results in denial of service. It is possible to launch the attack remotely. The exploit has been made public and could be used.
AnalysisAI
Denial of service in Tenda W12 firmware 3.0.0.7(4763) allows a low-privileged remote attacker to crash the web management daemon by sending a crafted value for the 'web_over_time' argument to the cgiSysWebTimeoutSet handler in /bin/httpd. The availability impact is rated High (A:H), meaning successful exploitation renders the router's management interface - and potentially the device itself - unresponsive. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Low-privilege authentication to the Tenda W12 Web Management Interface is required, as confirmed by CVSS PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 reflects network-reachable (AV:N), low-complexity (AC:L), low-privilege (PR:L) exploitation with high availability impact and no confidentiality or integrity loss. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker authenticated to the Tenda W12 web management interface with low-privilege credentials - potentially obtained via default or guessed credentials - sends a crafted HTTP POST or GET request to the cgiSysWebTimeoutSet endpoint with a malformed or oversized 'web_over_time' parameter value. The /bin/httpd process fails to properly handle or release the associated resource, causing it to crash or hang. … |
| Remediation | No vendor-released patch has been identified at time of analysis; the Tenda product page (https://www.tenda.com.cn/) does not list a remediated firmware version. … Detailed patch versions, workarounds, and compensating controls in full report. |
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