CVE-2024-50697
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 · uneditedIn SunGrow WiNet-SV200.001.00.P027 and earlier versions, when decrypting MQTT messages, the code that parses specific TLV fields does not have sufficient bounds checks. This may result in a stack-based buffer overflow.
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 confidenceStack-based buffer overflow in SunGrow WiNet-SV200.001.00.P027 and earlier firmware versions during MQTT message decryption. The TLV field parsing code lacks sufficient bounds checking, allowing an attacker who can send specially crafted MQTT messages to potentially overwrite stack memory and achieve remote code execution or cause denial of service.
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< 200.001.00.p027CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device modelLocate the physical SunGrow WiNet-S gateway device or access its admin web interface. Confirm the model number matches the Sungrowpower Winet S series.Affected if The device is not a SunGrow WiNet-S model
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Determine the installed firmware versionAccess the device admin interface, typically via web browser at the device IP address. Navigate to the About or System Information page to find the firmware version string.Affected if The firmware version is less than 200.001.00.P027 (for example, 200.001.00.P026 or earlier)
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Verify if MQTT service is enabledCheck the device configuration settings for MQTT client or protocol settings. This is typically found under Network Settings, Communication Settings, or Protocol Configuration in the admin interface.Affected if MQTT is enabled and configured for communication with external systems
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Check MQTT network exposureReview network firewall rules or access control lists to determine if the MQTT port (default 1883 or configured port) is accessible from untrusted networks or the internet.Affected if MQTT port is exposed to untrusted or external networks
A user is affected if they have a SunGrow WiNet-S device running firmware version earlier than 200.001.00.P027 with MQTT enabled and accessible.
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.
dbcve · scoped200.001.00.p027
If vendor firmware patch is available, update immediately. Otherwise, isolate affected devices on restricted network segments, disable unnecessary MQTT exposure to external networks, and implement network-based input validation/filtering as compensating controls until patching is possible.
200.001.00.p027 or later
- Identify the current WiNet-S firmware version installed on the device
- Navigate to the official Sungrow support portal at en.sungrowpower.com
- Locate the firmware download section for WiNet-S products
- Download firmware version 200.001.00.p027 or later
- Follow the vendor's official firmware upgrade procedure to apply the update
- Verify the firmware has been successfully installed and the device is running the patched version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-50697 — 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-2024-50697 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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- 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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