Vulnerability · Published Apr 2, 2026 · Assigned by TPLink

CVE-2026-34118Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in multiple TP-Link Tapo Cameras

High 7.1

In plain English

A high-severity heap buffer overflow in Tapo C100 v5 from TP Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.5%top 60.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A heap-based buffer overflow vulnerability was identified in multiple TP-Link Tapo cameras 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 products (as reported)

Vendor	Product	Versions
TP-Link Systems Inc.	Tapo C520WS v2.6	0 – before 1.2.4 Build 260326 Rel.24666n
TP Link Systems Inc.	Tapo C100 v5	0 – before 1.5.4 Build 260528 Rel.11462n
TP Link Systems Inc.	Tapo C101 v5	0 – before 1.5.4 Build 260528 Rel.11462n
TP Link Systems Inc.	Tapo C210 v3	0 – before V3.6_1.2.7 Build 260818
TP Link Systems Inc.	Tapo TC70 v3	0 – before 1.9.2 Build 261009 Rel.61408n
TP Link Systems Inc.	Tapo C200 v3	0 – before 1.9.2 Build 261009 Rel.61408n

Weakness: CWE-122 · 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

In plain English

Official description

Affected products (as reported)

References