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CVE-2026-0918— Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS

Quick assessment

Affected
TP-Link Systems Inc. Tapo C220 v1
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TP-Link Tapo C220和TP-Link Tapo C520WS都是中国普联（TP-Link）公司的一个WiFi摄像头。 TP-Link Tapo C220 v1版本和P-Link Tapo C520WS v2版本存在安全漏洞，该漏洞源于HTTP服务未安全处理包含过大Content-Length标头的POST请求，可能导致拒绝服务。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.73% · P53

Affected Version Matrix 3

VendorProduct Version RangeStatus
TP-Link Systems Inc. Tapo C100 v5 < 1.4.3 Build 251128 affected
TP-Link Systems Inc. Tapo C220 v1 < 1.4.2 Build 251112 affected
TP-Link Systems Inc. Tapo C520WS v2 < 1.2.3 Build 251114 affected
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I. Basic Information for CVE-2026-0918

Vulnerability Information
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Vulnerability Title
Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS
Source: CVE Program / CVE List V5
Vulnerability Description
The Tapo C100 v5, C220 v1 and C520WS v2 cameras’ HTTP service does not safely handle POST requests containing an excessively large Content-Length header. The resulting failed memory allocation triggers a NULL pointer dereference, causing the main service process to crash. An unauthenticated attacker can repeatedly crash the service, causing temporary denial of service. The device restarts automatically, and repeated requests can keep it unavailable.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link Tapo C220和TP-Link Tapo C520WS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link Tapo C220和TP-Link Tapo C520WS都是中国普联（TP-Link）公司的一个WiFi摄像头。 TP-Link Tapo C220 v1版本和P-Link Tapo C520WS v2版本存在安全漏洞，该漏洞源于HTTP服务未安全处理包含过大Content-Length标头的POST请求，可能导致拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
TP-Link Systems Inc. Tapo C220 v1 0 ~ 1.4.2 Build 251112 -
TP-Link Systems Inc. Tapo C520WS v2 0 ~ 1.2.3 Build 251114 -
TP-Link Systems Inc. Tapo C100 v5 0 ~ 1.4.3 Build 251128 -

II. Public POCs for CVE-2026-0918

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III. Intelligence Information for CVE-2026-0918

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Security Blog Posts for CVE-2026-0918 (1)

Same Patch Batch · TP-Link Systems Inc. · 2026-01-27 · 3 CVEs total

CVE-2026-0919 Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C
CVE-2026-1315 Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520

IV. Related Vulnerabilities

Same product: Tapo C220 v1
Same vendor: TP-Link Systems Inc.
Same weakness: CWE-476

V. Comments for CVE-2026-0918

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