CVE-2026-34118
HIGH EPSS 17.2%
Published Apr 2, 20262mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 4.0
Published Apr 2, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
Description
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input. An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries. Successful exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/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 None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
17.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-122
Affected Products 2
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/5047/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.