CVE-2026-0918— Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS
Affected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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Blog · 1
- Smart Home Security Research — CVE-2026–0918 Assignedthird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-0918
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 |
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Same vendor: TP-Link Systems Inc.
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Arbitrary File Reading Vulnerability in OpenVPN Module in TP
Same weakness: CWE-476
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V. Comments for CVE-2026-0918
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