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800xaApplication · Abb

CVE-2021-22277

HIGH · 7.5 CVSS v3.1 Published 2022-04-01
Fix available
A fix is available. Upgrade to 3.0 / 6.0.0-4 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Improper Input Validation vulnerability in ABB 800xA, Control Software for AC 800M, Control Builder Safe, Compact Product Suite - Control and I/O, ABB Base Software for SoftControl allows an attacker to cause the denial of service.

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 confidence

This is an improper input validation vulnerability in ABB's industrial control system software (800xA, AC 800M, SoftControl, and related products). The flaw allows attackers to send specially crafted input that causes the system to crash, resulting in denial of service. This affects critical operational technology infrastructure used in industrial environments.

MitigationApply vendor-supplied patches or updates from ABB for the affected products. Implement network segmentation to limit exposure and follow ICS security best practices for change management.

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
800xaApplication
Affected:>= 5.1.0-0, <= 5.1.0-3>= 5.1.1-0, <= 5.1.1-4>= 6.0.0-0, < 6.0.0-4>= 6.1.0-0, < 6.1.1-2
Base SoftwareApplication
Affected:>= 5.1.0-0, <= 5.1.0-3>= 5.1.1-0, <= 5.1.1-4>= 6.0.0-0, <= 6.0.0-3>= 6.1.0-0, <= 6.1.1-1
Compact Product SuiteApplication
Affected:>= 5.1.0-0, <= 5.1.0-3>= 5.1.1-0, <= 5.1.1-4>= 6.0.0-0, <= 6.0.0-3>= 6.1.0-0, <= 6.1.1-1
Control Builder SafeApplication
Affected:< 3.0

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed ABB product
    Use system inventory, asset management tools, or check the system itself to determine which ABB product is running: 800xA, Base Software, Compact Product Suite, or Control Builder Safe
    Affected if The system runs any of these four ABB products
  2. Determine the version of ABB 800xA
    Check the installed version of ABB 800xA through system information, control panel, or ABB system manager
    Affected if The version falls within >= 5.1.0-0 to 5.1.0-3, >= 5.1.1-0 to 5.1.1-4, >= 6.0.0-0 to < 6.0.0-4, or >= 6.1.0-0 to < 6.1.1-2
  3. Determine the version of ABB Base Software
    Check the installed version of ABB Base Software through system information or ABB configuration tools
    Affected if The version falls within >= 5.1.0-0 to 5.1.0-3, >= 5.1.1-0 to 5.1.1-4, >= 6.0.0-0 to 6.0.0-3, or >= 6.1.0-0 to 6.1.1-1
  4. Determine the version of ABB Compact Product Suite
    Check the installed version of ABB Compact Product Suite through system information or ABB configuration tools
    Affected if The version falls within >= 5.1.0-0 to 5.1.0-3, >= 5.1.1-0 to 5.1.1-4, >= 6.0.0-0 to 6.0.0-3, or >= 6.1.0-0 to 6.1.1-1
  5. Determine the version of ABB Control Builder Safe
    Check the installed version of ABB Control Builder Safe through system information or ABB configuration tools
    Affected if The version is less than 3.0 (any version < 3.0)

The system is affected if it runs any of the four ABB products (800xA, Base Software, Compact Product Suite, or Control Builder Safe) and the installed version falls within the affected ranges listed above.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 3.0 / 6.0.0-4 / 6.1.1-2 or later
Fixed in 3.06.0.0-46.1.1-2
Interim mitigation

Apply vendor-supplied patches or updates from ABB for the affected products. Implement network segmentation to limit exposure and follow ICS security best practices for change management.

Recommended fix Moderate confidence

ABB 800xA/Base Software/Compact Product Suite: 6.0.0-4 or 6.1.1-2; Control Builder Safe: 3.0

  1. Identify the specific ABB product component affected (800xA, Base Software, Compact Product Suite, or Control Builder Safe)
  2. For ABB 800xA: Upgrade to version 6.0.0-4 or higher, or 6.1.1-2 or higher
  3. For ABB Base Software: Upgrade to version 6.0.0-4 or higher, or 6.1.1-2 or higher
  4. For ABB Compact Product Suite: Upgrade to version 6.0.0-4 or higher, or 6.1.1-2 or higher
  5. For Control Builder Safe: Upgrade to version 3.0 or higher
  6. Verify the upgrade in a test environment before deploying to production
  7. Test that the 800xA system and related services start correctly after upgrade
Caveat Verify compatibility with existing project files and configurations before upgrading; consult ABB documentation for migration notes between major version jumps

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in 800xa Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
24.0 hours of engineering $4,160
Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-22277 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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