CVE-2021-38142

Remote code execution via cleartext software updates

Published Sep 7, 2021 · Updated Aug 4, 2024

Cleartext update transport in Barco MirrorOp Windows Sender before 2.5.3.65 allows remote attackers to execute arbitrary code. The client retrieves software upgrades over HTTP without TLS protection, allowing a network intermediary to substitute a rogue upgrade that the updater executes. Exploitation requires access to the same local network and a target that attempts an update; successful substitution runs code on that Windows computer.

CVSS severity8.8
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext update transport in Barco MirrorOp Windows Sender before 2.5.3.65 allows remote attackers to execute arbitrary code. The client retrieves software upgrades over HTTP without TLS protection, allowing a network intermediary to substitute a rogue upgrade that the updater executes. Exploitation requires access to the same local network and a target that attempts an update; successful substitution runs code on that Windows computer.

The record

CVE
CVE-2021-38142
Published
Sep 7, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-319, T1557
Attack vector
adjacent
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
8.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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