Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-1871

Severity CVSS v4.0:
HIGH
Type:
CWE-121 Stack-based Buffer Overflow
Publication date:
02/06/2026
Last modified:
04/06/2026

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.<br /> <br /> 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.

Impact

Vector 4.0
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 CVSS v4.0 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: 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

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0
7.10
Severity 4.0
HIGH
Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
6.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.5:build_240327:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.12:build_240527:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.13:build_240619:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.0.17:build_240806:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.1.4:build_241219:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.1.8:build_250310:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.2.3:build_250610:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.1:build_250910:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.3:build_251119:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.5:build_260228:*:*:*:*:*:*
cpe:2.3:h:tp-link:tapo_c200:5:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools