CVE-2023-0847
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 · uneditedThe Sub-IoT implementation of the DASH 7 Alliance protocol has a vulnerability that can lead to an out-of-bounds write prior to implementation version 0.5.0. If the protocol has been compiled using default settings, this will only grant the attacker access to allocated but unused memory. However, if it was configured using non-default settings, there is the possibility that exploiting this vulnerability could lead to system crashes and remote code execution.
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 confidenceThe Sub-IoT implementation of the DASH 7 Alliance protocol contains an out-of-bounds write vulnerability affecting versions prior to 0.5.0. When compiled with default settings, the vulnerability only exposes allocated but unused memory; however, with non-default configuration settings, exploitation can cause system crashes and potentially enable remote code execution.
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<= 0.5.0CVSS 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 if DASH7 Sub-IoT is deployedReview your system inventory, software dependencies, or embedded firmware bill of materials (BOM) to determine if the Dash7 Alliance Protocol implementation (Sub-IoT) is included in your environment.Affected if The DASH7 Sub-IoT implementation is found in your environment.
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Determine the installed versionLocate the version information for the Dash7 Alliance Protocol library or firmware. This may be found in firmware metadata, library version files, build manifests, or by querying the device if accessible.Affected if The version is 0.5.0 or lower, or the version cannot be determined and the software predates the 0.5.0 release.
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Verify configuration settingsExamine the configuration files or build settings used for the DASH7 implementation. Look for non-default parameters related to memory allocation, buffer sizes, or security features that deviate from the default build configuration.Affected if Non-default configuration settings are in use, particularly those affecting memory management or buffer handling.
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Check for unexpected behaviorMonitor system logs, crash reports, or network telemetry for signs of system instability, unexpected restarts, or memory corruption patterns that could indicate exploitation attempts.
You are affected if the DASH7 Sub-IoT implementation is present in your environment with version 0.5.0 or lower, especially if non-default configuration settings are in use.
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 dataUpgrade the DASH 7 Sub-IoT implementation to version 0.5.0 or later. Review and validate configuration settings, as non-default configurations significantly increase exploit severity.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-0847 — 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-2023-0847 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
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