CVE-2026-0919— Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WS
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I. Basic Information for CVE-2026-0919
Vulnerability Information
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Vulnerability Title
Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WS
Source: NVD (National Vulnerability Database)
Vulnerability Description
The HTTP parser of Tapo C210 v3, C220 v1 and C520WS v2 cameras improperly handles requests containing an excessively long URL path. An invalid‑URL error path continues into cleanup code that assumes allocated buffers exist, leading to a crash and service restart. An unauthenticated attacker can force repeated service crashes or device reboots, causing denial of service.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
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TP-Link Tapo C520WS v2版本存在安全漏洞，该漏洞源于HTTP解析器未正确处理包含过长URL路径的请求，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 C210 v3 | 0 ~ 1.2.6 Build 260328 | - |
II. Public POCs for CVE-2026-0919
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · TP-Link Systems Inc. · 2026-01-27 · 3 CVEs total
| CVE-2026-0918 | Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS | |
| CVE-2026-1315 | Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520 |
IV. Related Vulnerabilities
Same vendor: TP-Link Systems Inc.
- CVE-2026-5039
Predictable Default Cryptographic Key Used for DES Encryptio - CVE-2026-5363
Use of weak cryptographic key in TP-Link Archer C7 - CVE-2026-30818
OS Command Injection Vulnerability in dnsmasq Module in TP-L - CVE-2026-30817
Arbitrary File Reading Vulnerability in dnsmasq Module in TP - CVE-2026-30816
Arbitrary File Reading Vulnerability in OpenVPN Module in TP
Same weakness: CWE-20
V. Comments for CVE-2026-0919
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