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

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CVE-2025-8065

Severity CVSS v4.0:
HIGH
Type:
CWE-121 Stack-based Buffer Overflow
Publication date:
20/12/2025
Last modified:
03/04/2026

Description

A stack-based buffer overflow vulnerability was identified in the ONVIF SOAP XML Parser in Tapo C200 v3 and C520WS v2.6. When processing XML tags with namespace prefixes, the parser fails to validate the prefix length before copying it to a fixed-size stack buffer. It allowed a crafted SOAP request with an oversized namespace prefix to cause memory corruption in stack. <br /> <br /> An unauthenticated attacker on the same local network may exploit this flaw to enable remote code execution with elevated privileges, leading to full compromise of the device.

Impact

Vector 4.0
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 8.70 HIGH
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0
8.70
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:1.3.3:build_230228:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.4:build_230424:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.5:build_230717:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.7:build_230920:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.9:build_231019:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.11:build_231115:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.13:build_240327:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.14:build_240513:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.15:build_240715:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.4.1:build_241212:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.4.2:build_250313:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:1.4.4:build_250922:*:*:*:*:*:*
cpe:2.3:h:tp-link:tapo_c200:3:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools