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I. Basic Information for CVE-2026-34120
Vulnerability Information

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Vulnerability Title
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
Source: NVD (National Vulnerability Database)
Vulnerability Description
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming inputs.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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
TP-Link Tapo C520WS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link Tapo C520WS是中国普联(TP-Link)公司的一个WiFi摄像头。 TP-Link Tapo C520WS v2.6版本存在安全漏洞,该漏洞源于异步解析本地视频流内容时缓冲区边界对齐和验证不足,可能导致堆内存损坏,进而引发拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
TP-Link Systems Inc.Tapo C520WS v2.6 0 ~ 1.2.4 Build 260326 Rel.24666n -
II. Public POCs for CVE-2026-34120
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III. Intelligence Information for CVE-2026-34120
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