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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-34122 Detail

Description

A stack-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within a configuration handling component due to insufficient input validation. An attacker can exploit this vulnerability by supplying an excessively long value for a vulnerable configuration parameter, resulting in a stack overflow. Successful exploitation results in Denial-of-Service (DoS) condition, leading to a service crash or device reboot, impacting availability.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  TPLink
CVSS-B 7.1 HIGH
Vector:  CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes TPLink Release Notes 
https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes TPLink Release Notes 
https://www.tp-link.com/us/support/faq/5047/ TPLink Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-121 Stack-based Buffer Overflow TPLink  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-34122
NVD Published Date:
04/02/2026
NVD Last Modified:
07/24/2026
Source:
TPLink