Description
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.
Published: 2026-05-31
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The Tenda W12 router firmware exposes a flaw in the cgistaKickOff function of the /bin/httpd binary. Manipulating the staMac argument can trigger a stack-based buffer overflow, and a published exploit demonstrates the capability to take control of the device. This type of vulnerability can compromise confidentiality, integrity, and availability by allowing an attacker to execute arbitrary code on the router.

Affected Systems

Tenda W12 routers running firmware version 3.0.0.7(4763) are vulnerable. The issue is confined to the httpd process on these devices and does not affect other Tenda products or firmware releases outside this version range.

Risk and Exploitability

The CVSS score of 8.7 signifies a high severity risk. Although no EPSS score is provided, the vulnerability is not listed in the CISA KEV catalog, yet an exploit has been published and can be delivered remotely by manipulating the staMac parameter. The stack overflow can be leveraged for remote code execution, making this a critical threat for any network that hosts the affected router without adequate protection.

Generated by OpenCVE AI on May 31, 2026 at 16:21 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Implement the official firmware upgrade that patches the stack-based buffer overflow in cgistaKickOff.
  • If an immediate firmware update is not available, configure firewall or access‑control rules to block or limit external requests to the httpd endpoint that processes the staMac parameter.
  • Enable logging for httpd activity and monitor for abnormal requests to cgistaKickOff, responding promptly to any signs of exploitation attempts.

Generated by OpenCVE AI on May 31, 2026 at 16:21 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 02 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Sun, 31 May 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Tenda w12
Vendors & Products Tenda w12

Sun, 31 May 2026 15:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Tenda W12 httpd cgistaKickOff stack-based overflow
First Time appeared Tenda
Tenda w12 Firmware
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:o:tenda:w12_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tenda
Tenda w12 Firmware
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Subscriptions

Tenda W12 W12 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-06-02T14:53:18.148Z

Reserved: 2026-05-30T16:45:07.942Z

Link: CVE-2026-10188

cve-icon Vulnrichment

Updated: 2026-06-02T14:53:13.866Z

cve-icon NVD

Status : Deferred

Published: 2026-05-31T15:16:16.117

Modified: 2026-06-01T15:15:37.293

Link: CVE-2026-10188

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-31T17:00:07Z

Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer

  • CWE-121

    Stack-based Buffer Overflow