CVE-2026-6242

MEDIUM EPSS 7.1%
Published Jun 6, 20263w ago · Modified Jun 17, 20262w ago
6.8 CVSS 4.0
Medium
Find Similar
Published Jun 6, 2026 3w ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.8
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Adjacent
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
7.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-134

References 3

  • tp-link.com https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes
  • tp-link.com https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes
  • tp-link.com https://www.tp-link.com/us/support/faq/5120/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.