dbcve.org
CWE-130Weakness · CWE-130

CVE-2026-6432

MEDIUM · 5.3 CVSS v4.0 Published 2026-06-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
59/100
Remediation priority · Elevated
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper bounds validation in EmberZNet SDK versions 9.0.2 and earlier may result in crashes or dynamic memory leakage.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Improper bounds validation in EmberZNet SDK versions 9.0.2 and earlier allows an attacker to trigger crashes or cause dynamic memory leakage, likely through malformed Zigbee network packets or API calls that do not properly validate array or buffer boundaries before memory operations.

MitigationUpgrade EmberZNet SDK to version 9.0.3 or later if available; otherwise, audit code paths that handle external input and add explicit bounds checks before memory read/write operations.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify EmberZNet SDK installation and version
    Locate the EmberZNet SDK installation directory or check build/system artifacts that reference the EmberZNet SDK version. This may be in a firmware manifest, a library file metadata, or a build configuration file.
    Affected if The installed version is 9.0.2 or any earlier version of the EmberZNet SDK.
  2. Confirm Zigbee network packet processing is enabled
    Inspect the device or application configuration to determine if the system is configured to receive and process incoming Zigbee network packets.
    Affected if The device processes Zigbee network traffic and the SDK version is 9.0.2 or earlier.
  3. Verify API endpoints that handle external input
    Review the application code or configuration to identify API calls or functions that accept external input related to Zigbee operations (e.g., cluster commands, attribute writes, ZDO requests).
    Affected if The system exposes API entry points that accept external Zigbee data without documented input validation and the SDK version is 9.0.2 or earlier.
  4. Check for crash or memory anomaly logs
    Examine system logs, crash dumps, or memory diagnostics for any unexplained crashes or memory leakage events that occurred during Zigbee packet processing.
    Affected if There are unexplained crashes or memory growth patterns associated with Zigbee network handling and the SDK version is 9.0.2 or earlier.

You are affected if the EmberZNet SDK version in your environment is 9.0.2 or earlier and the system processes external Zigbee network traffic or exposes API interfaces that handle Zigbee-related input.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade EmberZNet SDK to version 9.0.3 or later if available; otherwise, audit code paths that handle external input and add explicit bounds checks before memory read/write operations.

Recommended fix Moderate confidence

EmberZNet SDK version newer than 9.0.2 (contact Silicon Labs for specific fixed release)

  1. 1. Identify all deployments of EmberZNet SDK in your environment
  2. 2. Check current installed version of EmberZNet SDK (confirm it is 9.0.2 or earlier)
  3. 3. Consult Silicon Labs official release notes or support channels for the latest EmberZNet SDK version that addresses this vulnerability
  4. 4. Upgrade EmberZNet SDK to a version newer than 9.0.2 (refer to Silicon Labs security advisory for exact fixed release)
  5. 5. Rebuild and redeploy any applications or devices using the EmberZNet SDK
  6. 6. Verify the upgrade resolves the improper bounds validation issue
Caveat Review Silicon Labs release notes for any API changes or breaking changes between your current version and the target upgrade version

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-6432 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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