CVE-2026-6197 Tenda CVE debrief

Who should care

Defenders responsible for Tenda F456 devices, network administrators, and incident response teams should be aware of this vulnerability and take necessary actions to verify and patch affected devices.

Why it matters

CVE-2026-6197 is a stack-based buffer overflow vulnerability in Tenda F456 1.0.0.5 that allows remote attackers to manipulate the mit_ssid argument, potentially leading to device compromise. Defenders should prioritize verifying and patching affected devices, monitoring network traffic, and reviewing incident response plans.

• Remote attackers may exploit this vulnerability to execute a stack-based buffer overflow, potentially leading to device compromise.
• Defenders must verify and patch affected Tenda F456 devices to prevent exploitation.
• Network traffic monitoring is necessary to detect potential exploitation attempts.
• Incident response plans should be reviewed and updated to address this vulnerability.

Technical summary

The vulnerability affects the Tenda F456 1.0.0.5 device, specifically the formWrlsafeset function of the /goform/AdvSetWrlsafeset file. A remote attacker can manipulate the mit_ssid argument to potentially execute a stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. Defenders should prioritize verifying and patching affected Tenda F456 devices, as well as monitoring network traffic for potential exploitation attempts. It is essential to review and update incident response plans to address this vulnerability.

Defensive priority

Defenders should prioritize verifying and patching affected Tenda F456 devices, as well as monitoring network traffic for potential exploitation attempts.

Recommended defensive actions

• Verify and patch affected Tenda F456 devices
• Monitor network traffic for potential exploitation attempts
• Review and update incident response plans
• Perform a thorough review of network configurations to identify potential vulnerabilities
• Implement additional security measures such as firewall rules and intrusion detection systems
• Conduct regular security audits to identify and address potential weaknesses
• Keep software and firmware up-to-date to prevent exploitation of known vulnerabilities

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its CVSS score and weaknesses. However, the corpus does not establish versions, exploitation, impact, or remediation, which require verification from the supplied official sources.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.