Security readout for executives and security teams
Plain-English summary
CVE-2021-30982 is an Apple macOS race condition fixed by improved locking. Apple says a remote attacker may be able to cause an application to terminate unexpectedly or corrupt heap memory. The public record does not provide CVSS scoring, the affected component, or evidence of active exploitation.
Executive priority
Treat as a routine but time-bound macOS security update priority. Remote heap corruption language warrants attention, but the absence of CVSS, KEV listing, and exploitation evidence lowers emergency urgency based on the provided sources.
Technical view
The issue is described as a race condition in macOS, remediated through improved locking. Fixed releases are macOS Monterey 12.1, Security Update 2021-008 Catalina, and macOS Big Sur 11.6.2. Impact is remote-triggered application termination or heap corruption; technical preconditions are not specified.
Likely exposure
Exposure is likely limited to macOS systems not updated to Monterey 12.1, Big Sur 11.6.2, or Catalina Security Update 2021-008. The sources do not identify a specific subsystem, service, or configuration dependency.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. Remote attack impact is stated by Apple, but exploitability details, prerequisites, and public proof-of-concept status are not provided.
Researcher notes
Public detail is sparse. The record names only a race condition, improved locking, remote application termination, and heap corruption. No affected component, attack surface, CWE, CVSS vector, crash indicators, or exploit prerequisites are included in the provided sources.
Mitigation direction
- Update Monterey systems to macOS Monterey 12.1 or later.
- Update Big Sur systems to macOS Big Sur 11.6.2 or later.
- Apply Security Update 2021-008 on Catalina systems.
- Check Apple guidance for any newer superseding security updates.
Validation and detection
- Inventory macOS versions across managed endpoints.
- Confirm Catalina hosts have Security Update 2021-008 installed.
- Confirm Big Sur hosts are at 11.6.2 or later.
- Confirm Monterey hosts are at 12.1 or later.
- Review vulnerability scanner findings against Apple fixed-version 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-2021-30982 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/en-us/HT212978CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212979CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212981CVE 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.