CVE-2025-8065: tapo c200 Stack Overflow — Fix

Description

A stack-based buffer overflow vulnerability was identified in the ONVIF SOAP XML Parser in Tapo C200 v3 and C520WS v2.6. When processing XML tags with namespace prefixes, the parser fails to validate the prefix length before copying it to a fixed-size stack buffer. It allowed a crafted SOAP request with an oversized namespace prefix to cause memory corruption in stack. An unauthenticated attacker on the same local network may exploit this flaw to enable remote code execution with elevated privileges, leading to full compromise of the device.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-121 CWE-121

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200_firmware	All
tp-link	tapo_c200	All

References

Advisories & Patches

https://www.tp-link.com/us/support/faq/4849/

Other References

https://www.tp-link.com/en/support/download/tapo-c200/v3/#Firmware-Release-Notes https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes https://www.tp-link.com/us/support/download/tapo-c200/v3/#Firmware-Release-Notes https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes

Frequently Asked Questions

What is CVE-2025-8065? +

A stack-based buffer overflow vulnerability was identified in the ONVIF SOAP XML Parser in Tapo C200 v3 and C520WS v2.6. When processing XML tags with namespace prefixes, the parser fails to validate the prefix length before copying it to a fixed-size stack buffer. It allowed a crafted SOAP request with an oversized namespace prefix to cause memory corruption in stack. An unauthenticated attacker on the same local network may exploit this flaw to enable remote code execution with elevated privileges, leading to full compromise of the device. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-8065? +

CVE-2025-8065 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-8065? +

CVE-2025-8065 affects products from tp-link, specifically: tapo_c200, tapo_c200_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8065? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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