CVEvulnerability

CVE-2026-34118

7.1 HIGH Published 2026-04-02 Modified 2026-10-19 Official page ↗
Status
Modified
Published
2026-04-02
Last modified
2026-10-19
Assigner
f23511db-6c3e-4e32-a477-6aa17d310630
CVSS 4.0 (f23511db-6c3e-4e32-a477-6aa17d310630)
7.1 HIGH — 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
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-122

Description

A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C100/C101 v5, C210 v3.6 and 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.

Affected configurations

• tp-link tapo c520ws firmware (< 1.2.4)

Related

Weakness · CWE (1)

  • CWE-122 Heap-based Buffer Overflow weakness

References