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Winet S FirmwareOperating system · Sungrowpower

CVE-2024-50698

CRITICAL · 9.8 CVSS v3.1 Published 2025-01-24
Fix available
A fix is available. Upgrade to 200.001.00.p027 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
SunGrow WiNet-SV200.001.00.P027 and earlier versions is vulnerable to heap-based buffer overflow due to bounds checks of the MQTT message content.

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

Heap-based buffer overflow vulnerability in SunGrow WiNet-SV200 devices (firmware .001.00.P027 and earlier) due to insufficient bounds checking when processing incoming MQTT messages. This memory corruption issue can be exploited remotely without authentication to potentially achieve arbitrary code execution on the affected device.

MitigationApply vendor-supplied firmware patch when available; otherwise isolate affected devices behind a firewall or network segmentation to restrict unauthorized MQTT traffic.

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
Winet S FirmwareOperating system
Affected:< 200.001.00.p027

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 the device model
    Locate the device label, web interface, or management console to confirm the device is a SunGrow WiNet-SV200 or Sungrowpower Winet S series inverter controller
    Affected if Device is a SunGrow WiNet-SV200 or Winet S series model
  2. Check the installed firmware version
    Access the device web interface, CLI, or diagnostic page and locate the firmware version information. Compare it against the affected range: versions earlier than 200.001.00.p027
    Affected if Firmware version is < 200.001.00.p027 or displays as .001.00.P027 and earlier
  3. Verify MQTT service is enabled
    Check the device network configuration or services list to determine if the MQTT client/daemon is actively configured or running
    Affected if MQTT service is enabled and configured on the device
  4. Confirm network accessibility of MQTT port
    Check if the device MQTT port (typically 1883 or configured broker port) is exposed to untrusted networks or directly accessible from the internet
    Affected if MQTT port is reachable from untrusted network segments or the internet

Device is affected if it is a SunGrow WiNet-SV200 or Winet S unit running firmware earlier than 200.001.00.p027 with MQTT enabled and accessible from a network where an attacker could send malicious MQTT messages.

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 200.001.00.p027 or later
Fixed in 200.001.00.p027
Interim mitigation

Apply vendor-supplied firmware patch when available; otherwise isolate affected devices behind a firewall or network segmentation to restrict unauthorized MQTT traffic.

Recommended fix Moderate confidence

WiNet-S Firmware version 200.001.00.p028 or later (the first version after the fixed p027 release)

  1. 1. Identify the current WiNet-S firmware version by accessing the device management interface or checking the device status page
  2. 2. Confirm the current version is below 200.001.00.p027 (or p028 and later if p027 contains the fix)
  3. 3. Download the latest stable WiNet-S firmware from the official SunGrow support portal at en.sungrowpower.com
  4. 4. Follow SunGrow's standard firmware update procedure, typically involving uploading the firmware file through the device's web interface or management software
  5. 5. After upgrade, verify the new firmware version displays as 200.001.00.p027 or later
  6. 6. Validate that MQTT message handling functions correctly post-upgrade
Caveat Firmware upgrades on solar inverters may temporarily interrupt monitoring connectivity; ensure backup of configuration settings before proceeding

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

Fix this in Winet S Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing8.0 h
  • Review / QA4.0 h
18.0 hours of engineering $3,080
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,928.

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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-2024-50698 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
  • No spam, self-promotion, credentials, or personal data