CVE-2025-56400

Published Nov 24, 2025 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Cross-Site Request Forgery (CSRF) vulnerability in the OAuth implementation of the Tuya SDK 6.5.0 for Android and iOS, affects the Tuya Smart and Smartlife mobile applications, as well as other third-party applications that integrate the SDK, allows an attacker to link their own Amazon Alexa account to a victim's Tuya account. The applications fail to validate the OAuth state parameter during the account linking flow, enabling a cross-site request forgery (CSRF)-like attack. By tricking the victim into clicking a crafted authorization link, an attacker can complete the OAuth flow on the victim's behalf, resulting in unauthorized Alexa access to the victim's Tuya-connected devices. This affects users regardless of prior Alexa linkage and does not require the Tuya application to be active at the time. Successful exploitation may allow remote control of devices such as cameras, doorbells, door locks, or alarms.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Tuya tuya Smart
CPEs cpe:2.3:a:tuya:smartlife:6.3.1:*:*:*:*:iphone_os:*:*
cpe:2.3:a:tuya:smartlife:6.3.4:*:*:*:*:android:*:*
cpe:2.3:a:tuya:tuya:*:*:*:*:*:android:*:*
cpe:2.3:a:tuya:tuya:*:*:*:*:*:iphone_os:*:*
cpe:2.3:a:tuya:tuya_smart:6.3.1:*:*:*:*:android:*:*
cpe:2.3:a:tuya:tuya_smart:6.3.1:*:*:*:*:iphone_os:*:*
Vendors & Products Tuya tuya Smart
Type Values Removed Values Added
First Time appeared Apple
Apple ios
Google
Google android
Tuya
Tuya smart
Tuya smartlife
Tuya tuya
Vendors & Products Apple
Apple ios
Google
Google android
Tuya
Tuya smart
Tuya smartlife
Tuya tuya
Type Values Removed Values Added
Weaknesses CWE-352
CWE-384
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Cross-Site Request Forgery (CSRF) vulnerability in the OAuth implementation of the Tuya SDK 6.5.0 for Android and iOS, affects the Tuya Smart and Smartlife mobile applications, as well as other third-party applications that integrate the SDK, allows an attacker to link their own Amazon Alexa account to a victim's Tuya account. The applications fail to validate the OAuth state parameter during the account linking flow, enabling a cross-site request forgery (CSRF)-like attack. By tricking the victim into clicking a crafted authorization link, an attacker can complete the OAuth flow on the victim's behalf, resulting in unauthorized Alexa access to the victim's Tuya-connected devices. This affects users regardless of prior Alexa linkage and does not require the Tuya application to be active at the time. Successful exploitation may allow remote control of devices such as cameras, doorbells, door locks, or alarms.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 5, 2026, 1:18 AM
Reserved
Aug 16, 2025, 12:00 AM
Status
Modified
Published
Nov 24, 2025, 8:15 PM
Modified
Nov 5, 2026, 1:10 PM