CVE-2023-46221
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) or 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 confidenceA memory corruption vulnerability in the Mobile Device Server allows remote attackers to achieve DoS or potentially execute arbitrary code by sending specially crafted data packets. The CVSS 9.8 indicates network-exploitable with low complexity and no authentication required.
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
- 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 checksWork through these to decide whether this CVE applies to you.
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Identify Ivanti Avalanche installationLocate Ivanti Avalanche on the system by checking for its installation directory (typically in Program Files or a custom application path), or query installed programs via Windows Registry under HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall or via system inventory toolsAffected if Ivanti Avalanche software is found on the system
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Determine installed versionCheck the version of Ivanti Avalanche by viewing the file properties of the main executable (Avalanche.exe or similar), checking the About dialog within the application, or examining version information in the Windows Registry uninstall entryAffected if The version number is lower than 6.4.2 (e.g., 6.4.1, 6.4.0, 6.3.x, etc.)
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Verify Mobile Device Server componentConfirm the Mobile Device Server module is enabled and running by reviewing the Avalanche server configuration, checking the services list for Mobile Device Server-related services, or accessing the Avalanche admin console to view enabled server componentsAffected if Mobile Device Server component is installed and active
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Assess network exposureExamine network listening ports and firewall rules to determine if the Mobile Device Server is accessible from the network. Check for open ports typically used by Avalanche (often port 80/443 or custom ports) and review firewall inbound rulesAffected if The Mobile Device Server is listening on a network-accessible IP and accepts external connections without restriction
A system is affected if Ivanti Avalanche is installed with version lower than 6.4.2 and the Mobile Device Server component is enabled and network-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.
From vendor data6.4.2
Apply vendor-supplied patches or updates for the Mobile Device Server; if no patch exists, implement network segmentation and firewall rules to restrict access to the server until a fix is available.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-46221 — 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-2023-46221 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