CVE-2026-6242
Authenticated Format String Vulnerability in ONVIF Subscribe Service on TP-Link Tapo C520WS
- State
- Published
- Severity
- 6.8 Medium
- Published
- Jun 5, 2026
- Updated
- Jun 8, 2026
- Reserved
- Apr 13, 2026
Description
An authenticated format string vulnerability exists in the ONVIF Subscribe service in Tapo C520WS v2 due to improper handling of externally supplied parameters within formatting functions. An attacker may inject crafted format strings into event subscription requests or notification generation path to disrupt normal service execution.
Successful exploitation may cause the event notification service to terminate unexpectedly, resulting in the loss of real-time alarm functionality and disruption of event notifications.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | TPLink |
Weaknesses
- CWE-134 Use of Externally-Controlled format string
Affected Products
| Product | Versions |
|---|---|
Tapo C520WS v2TP-Link Systems Inc. |
|
References
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