CVE-2026-6016: Stack-based Buffer Overflow in Tenda AC9
CVE-2026-6016 is a high-severity stack-based buffer overflow vulnerability in the Tenda AC9 router firmware version 15. 03. 02. 13. The flaw exists in the decodePwd function within the /goform/WizardHandle POST request handler. An attacker can remotely trigger this vulnerability by manipulating the WANS argument, potentially leading to memory corruption. Although an exploit is publicly available, there is no confirmed patch or official remediation at this time.
AI Analysis
Technical Summary
This vulnerability affects Tenda AC9 version 15.03.02.13 and involves a stack-based buffer overflow in the decodePwd function of the POST Request Handler component, specifically in the /goform/WizardHandle endpoint. Remote attackers can exploit this by sending crafted POST requests with manipulated WANS arguments, causing a buffer overflow on the stack. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from the vendor.
Potential Impact
Successful exploitation of this vulnerability can lead to stack-based buffer overflow, which may allow remote attackers to execute arbitrary code or cause denial of service on the affected device. The high CVSS score reflects significant impact on confidentiality, integrity, and availability. However, there are no confirmed reports of exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider limiting network exposure of the affected device and monitor for suspicious activity related to the /goform/WizardHandle endpoint. No vendor-provided mitigations or temporary fixes are currently documented.
CVE-2026-6016: Stack-based Buffer Overflow in Tenda AC9
Description
CVE-2026-6016 is a high-severity stack-based buffer overflow vulnerability in the Tenda AC9 router firmware version 15. 03. 02. 13. The flaw exists in the decodePwd function within the /goform/WizardHandle POST request handler. An attacker can remotely trigger this vulnerability by manipulating the WANS argument, potentially leading to memory corruption. Although an exploit is publicly available, there is no confirmed patch or official remediation at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Tenda AC9 version 15.03.02.13 and involves a stack-based buffer overflow in the decodePwd function of the POST Request Handler component, specifically in the /goform/WizardHandle endpoint. Remote attackers can exploit this by sending crafted POST requests with manipulated WANS arguments, causing a buffer overflow on the stack. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from the vendor.
Potential Impact
Successful exploitation of this vulnerability can lead to stack-based buffer overflow, which may allow remote attackers to execute arbitrary code or cause denial of service on the affected device. The high CVSS score reflects significant impact on confidentiality, integrity, and availability. However, there are no confirmed reports of exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider limiting network exposure of the affected device and monitor for suspicious activity related to the /goform/WizardHandle endpoint. No vendor-provided mitigations or temporary fixes are currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-09T14:38:10.228Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d8c0ed1cc7ad14daa35382
Added to database: 4/10/2026, 9:20:45 AM
Last enriched: 4/10/2026, 9:35:49 AM
Last updated: 4/10/2026, 11:30:25 AM
Views: 5
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