Security readout for executives and security teams
Plain-English summary
This flaw affects Weintek cMT industrial HMI products. An unauthenticated remote attacker may be able to run operating-system commands as root. For an executive, the business concern is direct compromise of equipment used around industrial operations, with potential loss of control, integrity, and availability.
Executive priority
Prioritize this as an urgent industrial-control exposure review. Any affected device reachable by untrusted users should be isolated and assessed quickly, because the described impact is remote root-level command execution without authentication.
Technical view
CVE-2021-27446 is a CWE-94 code injection issue in the Weintek cMT EasyWeb product line. The supplied CVSS 3.1 vector is 10.0, network reachable, low complexity, no privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant where listed Weintek cMT devices or EasyWeb services are reachable from corporate, vendor, or internet-connected networks. The bundle does not specify affected firmware versions, so asset identification must focus on model presence and vendor advisory status.
Exploitation context
The source bundle says unauthenticated remote command execution as root may be possible. CISA KEV status is false in the bundle, and no cited source here confirms active exploitation. Treat this as high urgency because the required attacker access is remote and unauthenticated.
Researcher notes
The bundle lacks affected firmware ranges, proof details, and explicit patch text. Do not infer exploit maturity beyond the CVE description and CVSS vector. Focus validation on model discovery, network reachability, firmware/advisory comparison, and evidence of suspicious access.
Mitigation direction
- Inventory listed Weintek cMT models and their firmware status.
- Review Weintek TEC21001E and CISA ICSA-21-082-01 for vendor-approved remediation.
- Remove EasyWeb access from internet and untrusted networks.
- Restrict access with firewall rules, segmentation, and authenticated remote-access paths.
- Monitor affected device logs and surrounding network telemetry for abnormal access.
Validation and detection
- Confirm whether any affected Weintek cMT models are deployed.
- Identify reachable EasyWeb or management interfaces for those devices.
- Check whether exposed services are accessible from untrusted network zones.
- Compare device firmware and configuration against Weintek and CISA guidance.
- Review recent network logs for unexpected connections to affected devices.
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-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process 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 lookupCVE-2021-27446 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-21-082-01CVE reference · x_refsource_MISC
- https://dl.weintek.com/public/Document/TEC/TEC21001E_cMT_EasyWeb_V1_Security_Issues.pdfCVE reference · x_refsource_CONFIRM
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.