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CVE-2026-0919— Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, 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。

AI Predicted 7.5 Difficulty: Trivial EPSS 0.59% · P46

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 3

VendorProduct Version RangeStatus
TP Link Systems Inc. Tapo C210 v3 < 1.2.6 Build 260328 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-2026-0919

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: CVE Program / CVE List V5
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: 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
输入验证不恰当
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

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III. Intelligence Information for CVE-2026-0919

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Vendor Pages for CVE-2026-0919 (2)

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 product: Tapo C220 v1
Same vendor: TP-Link Systems Inc.
Same weakness: CWE-20

V. Comments for CVE-2026-0919

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