CVE-2026-6240

Published: Giu 06, 2026 Last Modified: Giu 06, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,8
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Attack Vector: adjacent
Attack Complexity: low
Privileges Required: high
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

A stack-based buffer overflow vulnerability exists in Tapo C520WS v2 in the ONVIF DeleteUsers service, due to insufficient boundary checks when handling multiple user deletion parameters. An authenticated attacker can send a crafted malicious request containing an excessive number of identifiers to overflow stack memory.

Successful exploitation may result in a service crash or deadlock, leading to DoS affecting device management and monitoring functionality.

121

Stack-based Buffer Overflow

Draft
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Integrity Confidentiality Access Control Other
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Execute Unauthorized Code Or Commands Bypass Protection Mechanism Other
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Likelihood of Exploit: High
View CWE Details
https://www.tp-link.com/en/support/download/tapo-c520ws/#Fi…
https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes
https://www.tp-link.com/us/support/download/tapo-c520ws/#Fi…
https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes
https://www.tp-link.com/us/support/faq/5120/
https://www.tp-link.com/us/support/faq/5120/