Security readout for executives and security teams
Plain-English summary
Mesa Labs AmegaView 3.0 and earlier has unsafe file permissions that may let a low-privileged local user gain higher privileges on the device. For organizations using this product in regulated or operational environments, the concern is loss of control and integrity on affected systems.
Executive priority
Treat this as a high-priority operational technology remediation item if AmegaView is deployed. It requires local access, but successful abuse could compromise device confidentiality, integrity, and availability.
Technical view
CVE-2021-27445 is an improper privilege management issue, mapped to CWE-269. The CVSS 3.1 vector is local, low complexity, low privileges required, no user interaction, unchanged scope, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to organizations running Mesa Labs AmegaView versions 3.0 and prior. The CVSS vector indicates local access is required; the provided sources do not indicate remote exploitation or broad internet-facing exposure.
Exploitation context
The source bundle does not cite active exploitation, and the issue is not marked as CISA KEV. Exploitation context should be treated as local privilege escalation risk, not confirmed in-the-wild exploitation.
Researcher notes
Available evidence identifies insecure file permissions in AmegaView 3.0 and prior. The bundle does not provide exploit details, confirmed exploitation, CPEs, or a named fixed version, so validation should focus on asset/version confirmation and vendor guidance.
Mitigation direction
- Identify all Mesa Labs AmegaView deployments and installed versions.
- Prioritize systems running AmegaView 3.0 or earlier for remediation review.
- Check Mesa Labs and CISA ICS guidance for vendor-approved fixes or mitigations.
- Restrict local user access to affected devices until remediation is confirmed.
- Monitor affected hosts for unexpected privilege changes or file permission modifications.
Validation and detection
- Confirm whether AmegaView is installed on operational systems.
- Record exact installed version and compare against 3.0 and prior exposure.
- Review file permissions against vendor or CISA guidance when available.
- Verify only authorized users have local access to affected devices.
- Document compensating controls where vendor remediation is unavailable.
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-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2021-27445 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://us-cert.cisa.gov/ics/advisories/icsa-21-147-03CVE 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.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.