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.
History

Tue, 07 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link tapo C520ws
Tp-link tapo C520ws Firmware
CPEs cpe:2.3:h:tp-link:tapo_c520ws:2.6:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c520ws_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tp-link tapo C520ws
Tp-link tapo C520ws Firmware
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tapo C520ws V2
Vendors & Products Tp-link
Tp-link tapo C520ws V2

Thu, 02 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title Stack-based Buffer Overflow Leading to Denial of Service in TP-Link Tapo C520WS
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 7.1, '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'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published: 2026-04-02T17:20:12.471Z

Updated: 2026-04-02T17:59:32.667Z

Reserved: 2026-03-25T18:54:03.343Z

Link: CVE-2026-34122

cve-icon Vulnrichment

Updated: 2026-04-02T17:59:29.666Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-02T18:16:29.150

Modified: 2026-04-06T20:23:49.380

Link: CVE-2026-34122

cve-icon Redhat

No data.