CVE-2026-19824: Stack-based Buffer Overflow in Tenda W20E
A stack-based buffer overflow vulnerability exists in the Tenda W20E router firmware version 15.11.0.6(1068_1546_841)_CN_TDC. The flaw is in the ipMacBindListStore function within the /goform/addIpMacBind endpoint. Remote attackers can exploit this by manipulating the IPMacBindRule argument, potentially leading to code execution. Public exploit code is available. The vulnerability has a high severity rating with a CVSS score of 8.7.
AI Analysis
Technical Summary
CVE-2026-19824 is a stack-based buffer overflow vulnerability in the Tenda W20E device firmware 15.11.0.6(1068_1546_841)_CN_TDC. The vulnerable function ipMacBindListStore, located in /goform/addIpMacBind, improperly handles the IPMacBindRule argument, allowing remote attackers to trigger a buffer overflow. This flaw can be exploited without user interaction and requires low attack complexity and privileges. Exploit code has been publicly released, increasing the risk of attacks.
Potential Impact
Successful exploitation can lead to remote code execution or denial of service on the affected device. Given the remote attack vector and high impact on confidentiality, integrity, and availability, this vulnerability poses a significant risk to affected Tenda W20E devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the device management interface and monitor for suspicious activity related to IPMacBindRule manipulation.
CVE-2026-19824: Stack-based Buffer Overflow in Tenda W20E
Description
A stack-based buffer overflow vulnerability exists in the Tenda W20E router firmware version 15.11.0.6(1068_1546_841)_CN_TDC. The flaw is in the ipMacBindListStore function within the /goform/addIpMacBind endpoint. Remote attackers can exploit this by manipulating the IPMacBindRule argument, potentially leading to code execution. Public exploit code is available. The vulnerability has a high severity rating with a CVSS score of 8.7.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19824 is a stack-based buffer overflow vulnerability in the Tenda W20E device firmware 15.11.0.6(1068_1546_841)_CN_TDC. The vulnerable function ipMacBindListStore, located in /goform/addIpMacBind, improperly handles the IPMacBindRule argument, allowing remote attackers to trigger a buffer overflow. This flaw can be exploited without user interaction and requires low attack complexity and privileges. Exploit code has been publicly released, increasing the risk of attacks.
Potential Impact
Successful exploitation can lead to remote code execution or denial of service on the affected device. Given the remote attack vector and high impact on confidentiality, integrity, and availability, this vulnerability poses a significant risk to affected Tenda W20E devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the device management interface and monitor for suspicious activity related to IPMacBindRule manipulation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-14T05:30:23.439Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7f1097bf8831d53914a6b8
Added to database: 08/14/2026, 12:56:55 UTC
Last enriched: 08/14/2026, 13:11:08 UTC
Last updated: 08/14/2026, 13:16:48 UTC
Views: 4
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