CVE-2026-6241 Details
Description
An authenticated format string vulnerability is present in the ONVIF AddScopes in Tapo C520WS v2, where user-controlled input is improperly passed to formatting functions without adequate sanitization. An attacker can inject format specifiers into ONVIF scope parameters to manipulate memory handling behavior. Successful exploitation may cause the ONVIF management service to crash, resulting in DoS condition that impacts normal device operation.
A format string vulnerability has been identified in the ONVIF AddScopes method of the TP-Link Tapo C520WS v2 camera. This vulnerability allows authenticated attackers to inject format specifiers into ONVIF scope parameters, manipulating memory handling functions. The lack of proper input sanitization enables this exploitation. Successful attacks can cause the ONVIF management service to crash, leading to a denial-of-service condition that disrupts normal device operation.
Users are advised to update the Tapo C520WS v2 to the latest firmware version. The updated firmware can be downloaded from the TP-Link website.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 6, 2026CISA-ADP
Assessed Jun 8, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes | TPLink | ProductRelease NotesVendor |
| https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes | TPLink | ProductRelease NotesVendor |
| https://www.tp-link.com/us/support/faq/5120/ | TPLink | AdvisoryBundleRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-134 | Use of Externally-Controlled Format String | TPLink |
Affected Products
| Product | Versions |
|---|---|
| TP-Link Tapo C520WS | < 1.2.6 Build 260528 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | TPLink |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 6, 2026 | New CVE Received | TPLink |