CVE-2026-15543 Tenda CVE debrief

Who should care

Administrators and users of Tenda CH22 1.0.0.1 should be aware of this HIGH severity vulnerability affecting the formCertListInfo function. Immediate attention is recommended due to the HIGH severity and remote attack vector of this vulnerability. The vulnerability can be exploited remotely, and its CVSS score is 7.4.

Technical summary

A buffer overflow vulnerability was found in Tenda CH22 1.0.0.1, specifically in the formCertListInfo function. The manipulation of the Name argument results in a buffer overflow, allowing for remote attacks. The vulnerability has a CVSS score of 7.4 and is classified as HIGH severity. The CVE record was published on 2026-07-13T08:16:20.967Z and has not been modified since then. Further investigation and verification are necessary to fully understand the impact and scope of this vulnerability.

Defensive priority

Immediate attention is recommended due to the HIGH severity and remote attack vector of this vulnerability.

Recommended defensive actions

• Inventory and verify affected Tenda CH22 1.0.0.1 devices
• Apply vendor remediation or patches if available
• Implement compensating controls such as network segmentation or access restrictions
• Monitor for suspicious activity related to the affected function
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation and verification are necessary to fully understand the impact and scope of this vulnerability. The buffer overflow vulnerability in the formCertListInfo function of Tenda CH22 1.0.0.1 can be exploited remotely, and its CVSS score is 7.4, classified as HIGH severity. Administrators and users should be aware of this vulnerability and take necessary precautions. The CVE record was published on 2026-07-13T08:16:20.967Z and has not been modified since then.

Official resources