CVE-2026-0619
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 · uneditedA reachable infinite loop via an integer wraparound is present in Silicon Labs' Matter SDK which allows an attacker to trigger a denial of service. A hard reset is required to recover the device.
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 confidenceAn integer wraparound vulnerability in Silicon Labs' Matter SDK creates a reachable infinite loop condition that can be triggered by an attacker, resulting in denial of service. The affected device requires a hard reset to recover, indicating a crash or hang state rather than a graceful error condition.
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:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify the Matter SDK versionLocate the Silicon Labs Matter SDK installation directory and check the version file or package metadata. Common locations include /opt/silabs/matter-sdk or within project dependencies (package.json, requirements.txt, or similar). Run 'git log' or check release tags if using a source checkout.Affected if The installed version falls within any affected version range stated in Silicon Labs security advisories for CVE-2026-0619, or if the version is older than the patched release.
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Locate loops with integer counters in application codeSearch the application source code for 'for' and 'while' loops that use integer variables as counters. Use grep or IDE search for patterns like 'for (int', 'while (int', or counter variable names such as 'i', 'index', 'count', 'len'. Focus on loops that process data from network sources.Affected if The codebase contains loops with integer counters that process external input without explicit bounds validation before the loop condition.
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Verify bounds checking exists on loop conditionsInspect each identified loop to determine if there is explicit validation of the counter variable before or within the loop. Look for comparisons like 'if (counter < max)' or safety checks that prevent the counter from exceeding expected boundaries.Affected if Loops lack proper bounds checking before the loop condition, allowing integer overflow to cause the loop condition to remain true indefinitely.
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Identify network-exposable attack surfaceDetermine if the vulnerable loop code can be reached by processing incoming Matter protocol messages or other network data. Review Matter cluster handlers, attribute access callbacks, and message parsing functions that could pass untrusted values to loop counters.Affected if The loop counter can be influenced by values received over the network from untrusted devices, allowing an attacker to trigger the wraparound condition.
A user is affected if their Silicon Labs Matter SDK version is unpatched and their application contains loops with integer counters that lack bounds checking and can be triggered by network-reachable input.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataApply any available patches or updates to the Matter SDK once released; implement input validation and bounds checking around loops using integer counters to prevent wraparound-induced infinite loops. If no patch is available, consider compensating controls such as network segmentation to limit attacker reachability.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-0619 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-0619 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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