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CVE-2026-1871— Authenticated Stack-based Buffer Overflow in RTSP Authentication of Tapo C200

Quick assessment

Affected
TP-Link Systems Inc. Tapo C200 v5
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 C200是中国普联（TP-Link）公司的一款网络摄像头设备。 TP-Link Tapo C200 v5版本存在安全漏洞，该漏洞源于RTSP身份验证处理中Authorization标头字段长度验证不当，可能导致栈缓冲区溢出，触发RTSP核心服务进程崩溃并自动重启系统，造成拒绝服务。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.30% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
TP-Link Systems Inc. Tapo C200 v5 < 1.4.4 Build 260527 Rel.28339n affected
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I. Basic Information for CVE-2026-1871

Vulnerability Information
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Vulnerability Title
Authenticated Stack-based Buffer Overflow in RTSP Authentication of Tapo C200
Source: CVE Program / CVE List V5
Vulnerability Description
TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request. Successful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition. This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.
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
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link Tapo C200 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link Tapo C200是中国普联（TP-Link）公司的一款网络摄像头设备。 TP-Link Tapo C200 v5版本存在安全漏洞，该漏洞源于RTSP身份验证处理中Authorization标头字段长度验证不当，可能导致栈缓冲区溢出，触发RTSP核心服务进程崩溃并自动重启系统，造成拒绝服务。
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 C200 v5 0 ~ 1.4.4 Build 260527 Rel.28339n -

II. Public POCs for CVE-2026-1871

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III. Intelligence Information for CVE-2026-1871

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Vendor Advisories for CVE-2026-1871 (1)

Vendor Pages for CVE-2026-1871 (1)

IV. Related Vulnerabilities

Same product: Tapo C200 v5
Same vendor: TP-Link Systems Inc.
Same weakness: CWE-121

V. Comments for CVE-2026-1871

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