Security readout for executives and security teams
Plain-English summary
CVE-2021-22657 is a critical command-injection flaw in mySCADA myPRO 8.20.0 and earlier. A network attacker may be able to abuse an API password-related parameter to run operating system commands, potentially compromising confidentiality, integrity, and availability of the system.
Executive priority
Treat this as an urgent operational technology risk. Affected, reachable deployments could allow full system compromise. Prioritize discovery, exposure reduction, vendor guidance review, and remediation planning.
Technical view
The CVE describes CWE-78 OS command injection in mySCADA myPRO. CVSS 3.1 is 10.0 with network access, low complexity, no privileges, no user interaction, changed scope, and high CIA impact. The source bundle does not include exploit procedure or confirmed patch details.
Likely exposure
Exposure is most relevant for organizations running mySCADA myPRO 8.20.0 or prior where the affected API is reachable over a network, especially from untrusted segments or the internet.
Exploitation context
The source bundle does not mark this CVE as CISA KEV, and no cited source in the bundle confirms active exploitation. The severity is still high because the CVSS vector indicates unauthenticated network reachability and full impact potential.
Researcher notes
Evidence is limited to the CVE record and CISA advisory reference in the source bundle. The affected condition is mySCADA myPRO 8.20.0 and prior, involving an API password parameter and OS command injection. No exploit status or fix version is provided here.
Mitigation direction
- Inventory mySCADA myPRO deployments and confirm whether versions are 8.20.0 or prior.
- Review CISA and mySCADA guidance for supported updates or vendor-approved mitigations.
- Restrict myPRO API access to trusted management networks until remediated.
- Remove unnecessary internet exposure for affected systems.
- Monitor myPRO hosts for unexpected command execution or process activity.
Validation and detection
- Confirm exact mySCADA myPRO versions in asset inventory and on hosts.
- Verify whether affected API endpoints are reachable from untrusted networks.
- Check perimeter rules for exposed myPRO services.
- Review system and application logs for suspicious command execution indicators.
- Document remediation status and compensating controls for each affected deployment.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-22657 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-01CVE 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 Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.