Security readout for executives and security teams
Plain-English summary
CVE-2021-30924 is an Apple macOS denial-of-service issue. Apple states a remote attacker could cause a device to unexpectedly restart. The business impact is availability disruption, not documented data theft or privilege gain. Apple fixed the issue in macOS Monterey 12.0.1.
Executive priority
Handle through normal macOS patch governance, with faster action for critical user endpoints and availability-sensitive systems. The available evidence supports moderate urgency because the impact is remote restart, with no confirmed exploitation in the provided sources.
Technical view
Apple describes this as a denial-of-service flaw addressed through improved state handling. The public record names macOS and says remote triggering can cause an unexpected restart. The sources do not provide CVSS, CWE, vulnerable component, exact affected version range, or exploit prerequisites.
Likely exposure
Exposure is likely limited to Apple macOS systems running affected versions before the fixed Monterey 12.0.1 release. Public evidence does not identify the exact vulnerable component or whether specific services must be reachable.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Treat this as a remotely triggerable availability issue with incomplete public technical detail, not as a confirmed in-the-wild campaign.
Researcher notes
Public details are sparse. The record identifies remote denial of service and improved state handling but not the affected subsystem, crash condition, authentication requirements, or version boundaries beyond the Monterey 12.0.1 fix statement.
Mitigation direction
- Update affected macOS systems to macOS Monterey 12.0.1 or later vendor-fixed releases.
- Check Apple security guidance for any newer applicable macOS updates.
- Prioritize systems with high availability requirements or remote exposure.
- Track unsupported macOS assets for replacement or compensating controls.
Validation and detection
- Inventory macOS endpoints and record current OS versions.
- Confirm whether systems are at macOS Monterey 12.0.1 or later.
- Review Apple security update references for this CVE.
- Monitor endpoint restart events for unexplained availability disruptions.
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-2021-30924 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/kb/HT212867CVE reference · x_refsource_CONFIRM
- https://support.apple.com/kb/HT212876CVE reference · x_refsource_CONFIRM
- https://support.apple.com/kb/HT212874CVE 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.