CVE-2021-22272Network attack vector

Unauthenticated remote device control via reusable serial enrollment

Published Sep 27, 2021 · Updated Sep 16, 2024

Improper authorization in ControlTouch cloud portals before 2021-05-03 allows remote attackers to observe and control linked devices. The registration endpoint accepted a ControlTouch serial number during commissioning and reassigned the device to an attacker's portal profile without limiting enrollment to its initial use. Exploitation required the serial number and a specific commissioning window; successful reassignment granted end-user access to view and modify the building configuration remotely.

CVSS severity6.5
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in ControlTouch cloud portals before 2021-05-03 allows remote attackers to observe and control linked devices. The registration endpoint accepted a ControlTouch serial number during commissioning and reassigned the device to an attacker's portal profile without limiting enrollment to its initial use. Exploitation required the serial number and a specific commissioning window; successful reassignment granted end-user access to view and modify the building configuration remotely.

The record

CVE
CVE-2021-22272
Published
Sep 27, 2021
Updated
Sep 16, 2024
Vendor
ABB
Product
MyBuildings Portal
Classifications
CWE-200, T1078.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2021-05-03 <2021-05-03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ABB · MyBuildings Portalversion=2021-05-03 <2021-05-03
Busch-Jaeger · myBUSCH-JAEGERversion=2021-05-03 <2021-05-03

Published CVSS scores

6.5Asea Brown Boveri Ltd. (ABB)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.2ABBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:H/RL:O/RC:C
9.0NIST NVDAV:N/AC:M/Au:N/C:P/I:C/A:C
9.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1078.004Valid Accounts: Cloud Accounts

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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