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CVE-2025-56400: Cross-Site Request Forgery (CSRF) vulnerability in the OAuth implementation of the Tuya SDK 6.5.0 for Android

33
Routine
HIGH 8.8DOWNGRADEDOWNGRADEUPGRADE

CVE-2025-56400 is a high-severity flaw (CVSS 8.8) affecting smartlife, smartlife, tuya. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 reques

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.2% (top 92%)
CISA exploited listNo
WeaknessCWE-352, CWE-384
Published2025-11-24
Last modified2026-07-05
Publisher (CNA): MITRE · Vendor: tuya

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Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

tuya smartlife DOWNGRADE
Affected: 6.3.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.3.1
1. Check installed version
apt-cache policy smartlife || rpm -q smartlife || smartlife --version
2. No fixed release: DOWNGRADE to a release before 6.3.1 (Debian / Ubuntu)
apt-cache madison smartlife sudo apt install smartlife=<VERSION_BEFORE_6.3.1> sudo apt-mark hold smartlife
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list smartlife sudo dnf downgrade smartlife-<VERSION_BEFORE_6.3.1> sudo dnf versionlock add smartlife
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
tuya smartlife DOWNGRADE
Affected: 6.3.4
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.3.4
1. Check installed version
apt-cache policy smartlife || rpm -q smartlife || smartlife --version
2. No fixed release: DOWNGRADE to a release before 6.3.4 (Debian / Ubuntu)
apt-cache madison smartlife sudo apt install smartlife=<VERSION_BEFORE_6.3.4> sudo apt-mark hold smartlife
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list smartlife sudo dnf downgrade smartlife-<VERSION_BEFORE_6.3.4> sudo dnf versionlock add smartlife
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
tuya tuya UPGRADE
Affected: < 6.5.0
Fixed in: 6.5.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy tuya || rpm -q tuya || tuya --version
2. UPGRADE to 6.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade tuya
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade tuya
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
tuya tuya UPGRADE
Affected: < 6.5.0
Fixed in: 6.5.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy tuya || rpm -q tuya || tuya --version
2. UPGRADE to 6.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade tuya
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade tuya
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
tuya tuya smart DOWNGRADE
Affected: 6.3.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.3.1
1. Check installed version
apt-cache policy tuya-smart || rpm -q tuya-smart || tuya-smart --version
2. No fixed release: DOWNGRADE to a release before 6.3.1 (Debian / Ubuntu)
apt-cache madison tuya-smart sudo apt install tuya-smart=<VERSION_BEFORE_6.3.1> sudo apt-mark hold tuya-smart
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list tuya-smart sudo dnf downgrade tuya-smart-<VERSION_BEFORE_6.3.1> sudo dnf versionlock add tuya-smart
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
tuya tuya smart DOWNGRADE
Affected: 6.3.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.3.1
1. Check installed version
apt-cache policy tuya-smart || rpm -q tuya-smart || tuya-smart --version
2. No fixed release: DOWNGRADE to a release before 6.3.1 (Debian / Ubuntu)
apt-cache madison tuya-smart sudo apt install tuya-smart=<VERSION_BEFORE_6.3.1> sudo apt-mark hold tuya-smart
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list tuya-smart sudo dnf downgrade tuya-smart-<VERSION_BEFORE_6.3.1> sudo dnf versionlock add tuya-smart
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-56400?

smartlife: downgrade or apply the listed mitigation; smartlife: downgrade or apply the listed mitigation; tuya: upgrade to 6.5.0. Exact commands for each OS are on this page.

Is CVE-2025-56400 being exploited?

CVE-2025-56400 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-56400 affect?

CVE-2025-56400 affects smartlife, smartlife, tuya. Severity is high (CVSS 8.8). 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 SD

How urgent is CVE-2025-56400?

Priority 33/100. High severity

Software pages

Android vulnerabilities · iOS vulnerabilities

References

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