CVE-2026-6121: Stack-based Buffer Overflow in Tenda F451
CVE-2026-6121 is a high-severity stack-based buffer overflow vulnerability in Tenda F451 version 1. 0. 0. 7. It exists in the httpd component's WrlclientSet function, specifically in the /goform/WrlclientSet endpoint. The vulnerability is triggered by manipulation of the GO argument, allowing remote attackers to cause a buffer overflow. An exploit has been published, but no official patch or remediation guidance is currently available from the vendor.
AI Analysis
Technical Summary
This vulnerability affects Tenda F451 firmware version 1.0.0.7, where the WrlclientSet function in the httpd service improperly handles the GO argument, leading to a stack-based buffer overflow. The flaw can be exploited remotely without user interaction or privileges, as indicated by the CVSS vector (AV:N/AC:L/PR:L/UI:N). The vulnerability has a CVSS 4.0 base score of 8.7, reflecting high impact on confidentiality, integrity, and availability. Although an exploit is publicly available, no official fix or patch has been released by Tenda as of the published date.
Potential Impact
Successful exploitation of this vulnerability may allow remote attackers to execute arbitrary code or cause denial of service on affected devices. The high CVSS score reflects significant potential impact on the device's confidentiality, integrity, and availability. Since the vulnerability is remotely exploitable without user interaction, affected devices are at elevated risk if exposed to untrusted networks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. In the absence of an official fix, affected users should consider restricting network access to the vulnerable device, especially blocking access to the /goform/WrlclientSet endpoint from untrusted sources. Monitor vendor channels for updates or patches addressing this vulnerability.
CVE-2026-6121: Stack-based Buffer Overflow in Tenda F451
Description
CVE-2026-6121 is a high-severity stack-based buffer overflow vulnerability in Tenda F451 version 1. 0. 0. 7. It exists in the httpd component's WrlclientSet function, specifically in the /goform/WrlclientSet endpoint. The vulnerability is triggered by manipulation of the GO argument, allowing remote attackers to cause a buffer overflow. An exploit has been published, but no official patch or remediation guidance is currently available from the vendor.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Tenda F451 firmware version 1.0.0.7, where the WrlclientSet function in the httpd service improperly handles the GO argument, leading to a stack-based buffer overflow. The flaw can be exploited remotely without user interaction or privileges, as indicated by the CVSS vector (AV:N/AC:L/PR:L/UI:N). The vulnerability has a CVSS 4.0 base score of 8.7, reflecting high impact on confidentiality, integrity, and availability. Although an exploit is publicly available, no official fix or patch has been released by Tenda as of the published date.
Potential Impact
Successful exploitation of this vulnerability may allow remote attackers to execute arbitrary code or cause denial of service on affected devices. The high CVSS score reflects significant potential impact on the device's confidentiality, integrity, and availability. Since the vulnerability is remotely exploitable without user interaction, affected devices are at elevated risk if exposed to untrusted networks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. In the absence of an official fix, affected users should consider restricting network access to the vulnerable device, especially blocking access to the /goform/WrlclientSet endpoint from untrusted sources. Monitor vendor channels for updates or patches addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-11T16:03:25.689Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69db4a6682d89c981f186e50
Added to database: 4/12/2026, 7:31:50 AM
Last enriched: 4/20/2026, 6:34:50 AM
Last updated: 5/27/2026, 10:44:58 AM
Views: 86
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