CVE-2026-34122: high-severity vulnerability in TP-Link Systems Inc. Tapo C520WS v2.6
Stack-based Buffer Overflow Leading to Denial of Service in TP-Link Tapo C520WS
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
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.
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
Affected products
TP-Link Systems Inc. · Tapo C520WS v2.6Related CVEs — TP-Link Systems Inc. Tapo C520WS v2.6
In the same product, most dangerous first.
CVE-2025-8065HIGHRemote Code Execution via Stack-based Buffer Overflow in ONVIF SOAP Parser in TP-Link Tapo C200 and C520WSEPSS 0.5%CVE-2026-34121HIGHAuthentication Bypass in DS Configuration Service via HTTP Request Parsing Differential of TP-Link Tapo C520WS and C210EPSS 0.5%CVE-2026-34118HIGHHeap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in multiple TP-Link Tapo CamerasEPSS 0.5%CVE-2026-34124HIGHDenial of Service via Path Expansion Overflow in HTTP Service in TP-Link Tapo C520WSEPSS 0.3%CVE-2026-34120HIGHHeap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WSEPSS 0.2%CVE-2026-34119HIGHHeap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WSEPSS 0.2%