Security readout for executives and security teams
Plain-English summary
CVE-2020-27941 is an Apple macOS flaw where a malicious or compromised application could gain kernel-level code execution. That means full control of the affected Mac is plausible. Apple fixed it in macOS Big Sur 11.1 and security updates for Catalina and Mojave.
Executive priority
Treat this as a high-priority macOS fleet hygiene issue. Kernel-level impact is serious, but the provided sources do not prove active exploitation. Focus on confirming Apple security updates are deployed across managed Macs.
Technical view
Apple describes this as a validation issue corrected with improved logic. The stated impact is arbitrary code execution with kernel privileges by an application. The public bundle does not provide CVSS, CWE, detailed affected version ranges, or vulnerability mechanics.
Likely exposure
Exposure is most likely on macOS systems not updated to Big Sur 11.1, Catalina Security Update 2020-001, or Mojave Security Update 2020-007. The source bundle lists macOS versions as unspecified, so exact vulnerable build mapping requires Apple guidance or fleet inventory.
Exploitation context
The cited sources do not show active exploitation, and the CVE is not marked KEV. Apple’s impact statement indicates exploitation would involve an application gaining kernel privileges, but no public source in the bundle provides exploit details or prevalence.
Researcher notes
Public details are sparse. The record gives impact and fixed releases but no root cause, affected build matrix, CVSS, CWE, proof-of-concept status, or indicators. Avoid assuming remote exploitation or confirmed in-the-wild use from this bundle.
Mitigation direction
- Apply macOS Big Sur 11.1 where applicable.
- Apply Security Update 2020-001 on Catalina systems.
- Apply Security Update 2020-007 on Mojave systems.
- Check Apple guidance for systems outside those update paths.
- Prioritize managed Macs that allow local application execution.
Validation and detection
- Inventory all macOS endpoints and their installed OS builds.
- Confirm Catalina and Mojave systems have the named security updates.
- Confirm Big Sur systems are on 11.1 or later.
- Check MDM compliance reports for missing macOS security updates.
- Review endpoint records for unsupported or unpatchable Macs.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-27941 mapping review
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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://support.apple.com/en-us/HT212011CVE 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.