Security readout for executives and security teams
Plain-English summary
SIMATIC eaSie Core Package versions before V22.00 may expose an MQTT service that, by default, lacks authentication. A remote unauthenticated attacker could send arbitrary messages and trigger arbitrary requests in the affected system. The sources do not provide CVSS details or active exploitation evidence.
Executive priority
Treat this as a high-priority industrial exposure review if SIMATIC eaSie is used. Prioritize upgrade planning and network reachability checks, especially for systems connected across plant, remote access, or vendor support networks.
Technical view
The issue is CWE-306: missing authentication for a critical function. In the default configuration, the underlying MQTT service accepts unauthenticated remote messages, allowing arbitrary requests inside affected SIMATIC eaSie Core Package systems. Affected versions are all releases before V22.00.
Likely exposure
Exposure is most likely where SIMATIC eaSie Core Package below V22.00 is deployed and the underlying MQTT service is reachable from untrusted networks or users.
Exploitation context
No provided source states active exploitation, and the CVE is not marked as CISA KEV. The risk comes from unauthenticated remote message injection into an operational service, not from confirmed in-the-wild activity.
Researcher notes
The source bundle gives affected versions, weakness class, and impact, but no CVSS vector, proof-of-concept status, or detailed remediation text beyond the version threshold. Avoid assuming broader Siemens products are affected.
Mitigation direction
- Identify SIMATIC eaSie Core Package deployments and versions.
- Upgrade affected systems to V22.00 or later where supported.
- Review the Siemens advisory for supported workarounds or configuration guidance.
- Restrict MQTT service reachability to trusted management or automation networks.
Validation and detection
- Confirm whether any installed SIMATIC eaSie Core Package version is below V22.00.
- Verify the underlying MQTT service is not reachable from untrusted networks.
- Review configuration against Siemens guidance for authentication expectations.
- Document any compensating controls for systems awaiting upgrade.
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-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-44222 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/pdf/ssa-580125.pdfCVE 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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.