Security readout for executives and security teams
Plain-English summary
Certain ABB industrial communication modules can be made unresponsive by malformed network input. The issue affects availability, not confidentiality or data integrity, but in operational technology environments loss of communications can interrupt monitoring or control functions.
Executive priority
Prioritize this for OT sites running the named ABB modules, especially where communications support critical operations. It is not shown as actively exploited in the supplied evidence, but the availability impact and unauthenticated network vector make timely exposure review important.
Technical view
CVE-2021-22286 is a CWE-20 improper input validation flaw in ABB SPIET800 and PNI800 modules. The CVSS 3.1 vector is network-reachable, low complexity, unauthenticated, no user interaction, with high availability impact and no stated confidentiality or integrity impact.
Likely exposure
Exposure is most likely in industrial environments using ABB SPIET800 INFI-Net to Ethernet Transfer modules or PNI800 S+ Ethernet communication interface modules. Risk is higher where these devices are reachable from enterprise, remote-access, or other untrusted networks.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. The CVSS vector indicates a remote unauthenticated denial-of-service condition is plausible, but the bundle does not provide exploit maturity, affected firmware versions, or operational prerequisites.
Researcher notes
The bundle names affected ABB products but not specific versions, firmware ranges, protocol details, patch identifiers, or mitigations. Avoid assuming broader ABB impact. Use vendor advisory data to refine asset matching and remediation status.
Mitigation direction
- Check ABB advisory 7PAA001353 for vendor-specific remediation and affected version details.
- Inventory environments for ABB SPIET800 and PNI800 modules.
- Restrict module network access to trusted industrial control segments.
- Block unnecessary access from enterprise, remote-access, and internet-facing paths.
- Monitor affected modules for unexpected resets, hangs, or communication loss.
- Plan remediation during an operational maintenance window if vendor updates apply.
Validation and detection
- Confirm whether SPIET800 or PNI800 modules exist in asset records.
- Map network paths that can reach affected module management or communication interfaces.
- Review ABB advisory against installed hardware and firmware details.
- Check OT monitoring for unexplained unresponsive module events.
- Verify compensating network controls are enforced between trusted and untrusted zones.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-22286 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://search.abb.com/library/Download.aspx?DocumentID=7PAA001353&LanguageCode=en&DocumentPartId=&Action=LaunchCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.