CVE-2023-46803
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 · uneditedAn attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could result to a Denial of Service (DoS).
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 confidenceThis vulnerability allows remote attackers to send specially crafted data packets to a Mobile Device Server, triggering memory corruption that leads to a Denial of Service condition. The attack is network-based and requires no authentication.
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< 6.4.2CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Verify Ivanti Avalanche is installedCheck for Ivanti Avalanche installation directory, typically under C:\Program Files\Avalanche or C:\Ivanti\Avalanche, or look for the Avalanche service in Windows Services.Affected if Ivanti Avalanche software is present on the system
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Determine installed Avalanche versionLocate the version information - common paths include the About dialog within the Avalanche console, or check version.txt or version.info in the installation directory.Affected if The installed version is lower than 6.4.2
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Confirm Mobile Device Server component is enabledCheck Avalanche console Server Configuration or Windows Services for 'Mobile Device Server' or 'Wavelink MDS' service status.Affected if Mobile Device Server service is running or enabled
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Assess network exposure of the serverReview firewall rules or network configuration to determine if the Mobile Device Server port (typically 1777 or 1778) is exposed to untrusted networks.Affected if The Mobile Device Server is accessible from untrusted network segments
If Ivanti Avalanche with version lower than 6.4.2 is installed and the Mobile Device Server component is enabled and network-accessible, the environment is affected by this CVE.
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 · scoped6.4.2
Apply vendor-provided patches for the Mobile Device Server and consider implementing network segmentation or firewall rules to restrict unauthorized packet traffic to the affected server.
Avalanche 6.4.2 or later
- Obtain Avalanche version 6.4.2 or later from the official download source (download.wavelink.com)
- Review the upgrade documentation provided with the new version
- Backup the current Avalanche configuration and database before upgrading
- Deploy the upgrade in a test or staging environment to verify functionality
- Apply the upgrade to the production Mobile Device Server component
- Verify the Mobile Device Server is running the patched version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 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 $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-46803 — 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-2023-46803 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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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.
- 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