CVE-2025-56557: An issue discovered in the Tuya Smart Life App 5.6.1 allows attackers to unprivileged control Matter devices v

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CRITICAL 9.1REMOTEDOWNGRADE

CVE-2025-56557 is a critical-severity flaw (CVSS 9.1) affecting tuya. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue discovered in the Tuya Smart Life App 5.6.1 allows attackers to unprivileged control Matter devices via the Matter protocol.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-250
Published	2025-09-16
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: tuya

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

Am I affected?

Timeline

2025-09-16 19:15 UTCPublished CVE record published
2026-07-05 02:17 UTCUpdated Record last modified

tuya tuya DOWNGRADE

Affected: 5.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.6.1

1. Check installed version

apt-cache policy tuya || rpm -q tuya || tuya --version

2. No fixed release: DOWNGRADE to a release before 5.6.1 (Debian / Ubuntu)

apt-cache madison tuya sudo apt install tuya=<VERSION_BEFORE_5.6.1> sudo apt-mark hold tuya

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tuya sudo dnf downgrade tuya-<VERSION_BEFORE_5.6.1> sudo dnf versionlock add tuya

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-2025-56557?

tuya: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-56557 being exploited?

CVE-2025-56557 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-2025-56557 affect?

CVE-2025-56557 affects tuya. Severity is critical (CVSS 9.1). An issue discovered in the Tuya Smart Life App 5.6.1 allows attackers to unprivileged control Matter devices via the Matter protocol.

How urgent is CVE-2025-56557?

Priority 43/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-56400 HIGH 8.8 DOWNGRADE DOWNGRADE Cross-Site Request Forgery (CSRF) vulnerability in the OAuth implementation of the Tuya SDK 6.5.0 for Android

References

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