Security readout for executives and security teams
Plain-English summary
CVE-2021-30864 is an Apple macOS sandbox restriction bypass. A malicious or compromised sandboxed process could gain capabilities it should not have. Apple says the issue was fixed with improved state management in macOS Monterey 12.0.1.
Executive priority
Treat this as a patch-compliance issue for macOS fleets. It is not confirmed as actively exploited here, but sandbox bypasses can weaken endpoint containment and increase impact after malicious code runs.
Technical view
Apple describes this as a logic issue in macOS where state management flaws could let a sandboxed process circumvent sandbox restrictions. Public sources do not provide CVSS, CWE, affected version ranges, component details, or technical exploit mechanics.
Likely exposure
Exposure is most relevant to macOS systems that have not received macOS Monterey 12.0.1 or applicable Apple security updates. The source bundle does not define exact vulnerable macOS versions.
Exploitation context
CISA KEV status is false in the bundle, and no provided source states active exploitation. The described impact suggests local or already-running sandboxed code could bypass containment, but public evidence here is limited.
Researcher notes
Public details are sparse. Apple confirms a sandbox restriction bypass fixed through improved state management, but does not name the subsystem, vulnerable versions, indicators, or exploit prerequisites in the provided bundle.
Mitigation direction
- Update macOS to Monterey 12.0.1 or later where applicable.
- Check Apple security guidance for supported versions and backported fixes.
- Prioritize managed Macs running older or unknown macOS builds.
- Restrict untrusted applications until patch status is verified.
Validation and detection
- Inventory macOS versions across managed endpoints.
- Confirm whether Monterey 12.0.1 or applicable Apple updates are installed.
- Review MDM compliance reports for outdated macOS devices.
- Check Apple advisories for any version-specific guidance.
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.
CVE-2021-30864 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://support.apple.com/kb/HT212804CVE reference · x_refsource_CONFIRM
- https://support.apple.com/en-us/HT212869CVE 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.