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Timeprovider 4100 FirmwareOperating system · Microchip

CVE-2025-47900

HIGH · 8.8 CVSS v3.1 Published 2025-10-20
Fix available
A fix is available. Upgrade to 2.5 or later.
See remediation →
94/100
Remediation priority · Urgent
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 Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Microchip Time Provider 4100 allows OS Command Injection.This issue affects Time Provider 4100: before 2.5.

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 · high confidence

OS Command Injection vulnerability in Microchip Time Provider 4100 allows remote attackers to execute arbitrary operating system commands due to improper neutralization of user-supplied input. This could allow complete compromise of the device.

MitigationUpgrade Microchip Time Provider 4100 firmware to version 2.5 or later to address the command injection vulnerability.

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

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Timeprovider 4100 FirmwareOperating system
Affected:< 2.5

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
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 device model
    Confirm the target device is a Microchip Time Provider 4100 by checking the device label, web interface header, or CLI system information output.
    Affected if Device is a Microchip Time Provider 4100 model.
  2. Check installed firmware version
    Access the device's web management interface and navigate to the System Information or About page to view the firmware version. Alternatively, use the CLI command 'show system information' or 'show version' to retrieve the firmware version.
    Affected if Firmware version displayed is below 2.5 (for example, 2.4.x, 2.3.x, etc.).
  3. Verify management interface accessibility
    Determine if the device's web management interface or CLI is exposed to untrusted networks by reviewing firewall rules or network ACLs protecting the device.
    Affected if Management interface is reachable from untrusted networks without network segmentation or access controls.

The environment is affected if the Microchip Time Provider 4100 is running firmware version lower than 2.5 and its management interface is network-accessible.

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
Upgrade available Upgrade to 2.5 or later
Fixed in 2.5
Interim mitigation

Upgrade Microchip Time Provider 4100 firmware to version 2.5 or later to address the command injection vulnerability.

Recommended fix High confidence

Microchip Time Provider 4100 Firmware version 2.5

  1. 1. Obtain the Time Provider 4100 Firmware version 2.5 or later from the official Microchip support portal or authorized distributor.
  2. 2. Review the firmware upgrade documentation provided by Microchip for the Time Provider 4100.
  3. 3. Create a backup of the current device configuration if the feature is available.
  4. 4. Ensure the device has stable power connectivity during the firmware upgrade process to prevent brickage.
  5. 5. Access the Time Provider 4100 administrative interface and navigate to the firmware update section.
  6. 6. Upload and apply the firmware version 2.5 or later to the device.
  7. 7. After the upgrade completes, verify the device is operational and accessible.
  8. 8. Confirm the installed firmware version matches the expected patched version (2.5 or later).

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

Fix this in Timeprovider 4100 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,720
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,752.

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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-2025-47900 in production — separate from our analysis above.

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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
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