CVE-2021-38142
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 · uneditedBarco MirrorOp Windows Sender before 2.5.3.65 uses cleartext HTTP and thus allows rogue software upgrades. An attacker on the local network can achieve remote code execution on any computer that tries to update Windows Sender due to the fact that the upgrade mechanism is not secured (is not protected with TLS).
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 confidenceBarco MirrorOp Windows Sender versions prior to 2.5.3.65 fetch software updates over unencrypted HTTP, allowing a man-in-the-middle attacker on the local network to intercept upgrade requests and inject malicious code, resulting in remote code execution on any client attempting to update the software.
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< 2.5.3.65CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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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Check installed MirrorOp Sender versionOpen Windows Control Panel > Programs and Features, or right-click the MirrorOp Sender application in Program Files and select Properties to view the version information.Affected if Version is displayed as lower than 2.5.3.65
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Locate MirrorOp installation directoryNavigate to the default installation path, typically C:\Program Files\Barco\MirrorOp or C:\Program Files (x86)\Barco\MirrorOp, and locate the main executable file.Affected if Executable exists and version property shows less than 2.5.3.65
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Verify update mechanism configurationCheck the MirrorOp Sender configuration files or settings interface for update server URL. Look for entries using http:// rather than https://.Affected if Update server URL uses unencrypted HTTP protocol and version is below 2.5.3.65
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Confirm update feature is enabledExamine the MirrorOp Sender settings or log files to determine if automatic or manual update checks are currently enabled.Affected if Update functionality is active and version is prior to 2.5.3.65
You are affected if Barco MirrorOp Windows Sender version is below 2.5.3.65 and the update mechanism is configured or active.
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 · scoped2.5.3.65
Upgrade to Barco MirrorOp Windows Sender version 2.5.3.65 or later which implements TLS protection for the upgrade mechanism. As a temporary mitigation, ensure updates are performed only over trusted networks.
2.5.3.65 or later
- Obtain MirrorOp Windows Sender version 2.5.3.65 or later from the official Barco website or your authorized Barco distributor
- Ensure the download source is legitimate and the connection is secure (HTTPS)
- Backup any existing configuration data for the current MirrorOp installation
- Uninstall the current version of MirrorOp Windows Sender
- Install the new version (2.5.3.65 or later)
- Verify the installation was successful
- After upgrading, ensure future updates are performed over secure network segments to minimize exposure during the update process
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 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 $3,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-38142 — 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-2021-38142 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