CVE-2025-56361: A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically with

Routine

MEDIUM 5.7DOWNGRADE

CVE-2025-56361 is a medium-severity flaw (CVSS 5.7) affecting matter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the Level Control cluster's server tick logic (`emberAfLevelControlClusterServerTickCallback`). When a MoveToLevel command is executed and followed by a conflicting write to the OperationMode attribute (in the Pump Configuration and Control cluster), an invariant check (`minLevel < currentLevel`) fails and causes the device to abort. T

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.7 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-617
Published	2026-07-14
Last modified	2026-10-13

Publisher (CNA): MITRE · Vendor: csa-iot

Last updated 2026-10-13 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-14 22:16 UTCPublished CVE record published
2026-10-13 10:10 UTCUpdated Record last modified

csa-iot matter DOWNGRADE

Affected: 1.3.0.0 · 1.4.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.0.0 (Debian / Ubuntu)

apt-cache madison matter sudo apt install matter=<VERSION_BEFORE_1.3.0.0> sudo apt-mark hold matter

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

dnf --showduplicates list matter sudo dnf downgrade matter-<VERSION_BEFORE_1.3.0.0> sudo dnf versionlock add matter

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-2025-56361?

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

Is CVE-2025-56361 being exploited?

CVE-2025-56361 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-2025-56361 affect?

CVE-2025-56361 affects matter. Severity is medium (CVSS 5.7). A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the Level Control cluster's server tick logic (`emberAfLevelControlClusterServerTickCallback`). When a MoveToLevel command is e

How urgent is CVE-2025-56361?

Priority 30/100. Public exploit reference

Related CVEs

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CVE-2025-56362 MEDIUM 5.7 DOWNGRADE A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.2, specifically with
CVE-2025-56365 MEDIUM 5.7 UPGRADE A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, in the interactio
CVE-2025-56364 MEDIUM 5.7 UPGRADE A use of uninitialized value vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, where the

References

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