CVE-2026-6241: CWE-134 Use of Externally-Controlled format string in TP-Link Systems Inc. Tapo C520WS v2
CVE-2026-6241 is an authenticated format string vulnerability in the ONVIF AddScopes functionality of the TP-Link Tapo C520WS v2 camera. User-controlled input is improperly handled in formatting functions, allowing injection of format specifiers. Exploitation can cause the ONVIF management service to crash, resulting in a denial-of-service condition that disrupts normal device operation. The vulnerability requires high privileges and does not involve user interaction. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
This vulnerability involves improper sanitization of user-controlled input passed to formatting functions within the ONVIF AddScopes feature of the Tapo C520WS v2 device. An authenticated attacker with high privileges can inject format string specifiers, potentially causing memory handling issues that lead to a crash of the ONVIF management service. This results in a denial-of-service condition affecting device availability. The CVSS 4.0 base score is 6.8, reflecting medium severity with attack vector being adjacent network and requiring high privileges.
Potential Impact
Successful exploitation causes the ONVIF management service on the affected device to crash, leading to denial of service and disruption of normal device operation. There is no indication of code execution or data disclosure from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the ONVIF management interface to trusted administrators only, as exploitation requires authenticated high privileges.
CVE-2026-6241: CWE-134 Use of Externally-Controlled format string in TP-Link Systems Inc. Tapo C520WS v2
Description
CVE-2026-6241 is an authenticated format string vulnerability in the ONVIF AddScopes functionality of the TP-Link Tapo C520WS v2 camera. User-controlled input is improperly handled in formatting functions, allowing injection of format specifiers. Exploitation can cause the ONVIF management service to crash, resulting in a denial-of-service condition that disrupts normal device operation. The vulnerability requires high privileges and does not involve user interaction. No official patch or remediation guidance is currently available.
CVSS v4.0
Score 6.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper sanitization of user-controlled input passed to formatting functions within the ONVIF AddScopes feature of the Tapo C520WS v2 device. An authenticated attacker with high privileges can inject format string specifiers, potentially causing memory handling issues that lead to a crash of the ONVIF management service. This results in a denial-of-service condition affecting device availability. The CVSS 4.0 base score is 6.8, reflecting medium severity with attack vector being adjacent network and requiring high privileges.
Potential Impact
Successful exploitation causes the ONVIF management service on the affected device to crash, leading to denial of service and disruption of normal device operation. There is no indication of code execution or data disclosure from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the ONVIF management interface to trusted administrators only, as exploitation requires authenticated high privileges.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-04-13T17:10:26.104Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a23675be29bf47b50dbe8dd
Added to database: 6/6/2026, 12:18:35 AM
Last enriched: 6/6/2026, 12:33:40 AM
Last updated: 6/6/2026, 3:17:53 AM
Views: 8
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