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CVE Record

CVE-2021-30906: This issue was addressed with improved checks.

This issue was addressed with improved checks. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. A local attacker may be able to elevate their privileges.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-30906 is an Apple local privilege escalation issue. Apple says a local attacker may be able to gain higher privileges, and it addressed the issue with improved checks. The public record provides limited technical detail, but fixed releases are named across iOS, iPadOS, macOS, tvOS, and watchOS.

Executive priority

Treat this as a routine but important Apple endpoint patching item. It is not sourced as actively exploited, but privilege escalation flaws can increase the impact of other compromises, especially on managed laptops and mobile devices.

Technical view

The CVE record describes insufficient checking resolved by improved checks. Impact is local privilege escalation. Fixed versions include iOS/iPadOS 15.1, macOS Monterey 12.0.1, macOS Big Sur 11.6.1, tvOS 15.1, and watchOS 8.1. No CVSS, CWE, component, or exploit detail is provided in the source bundle.

Likely exposure

Exposure is most likely on Apple endpoints running versions older than the named fixed releases. Risk depends on whether an attacker already has local access or code execution on the device. The source bundle does not provide exact vulnerable version ranges.

Exploitation context

The source bundle does not support active exploitation. CISA KEV status is false, and the cited records only state that a local attacker may elevate privileges. No public exploit status or exploitation campaign is cited.

Researcher notes

Public detail is sparse. The record does not identify the affected component, vulnerable version ranges, CVSS score, CWE, or root cause beyond improved checks. Avoid assuming exploitability beyond local privilege escalation unless additional vendor or research sources are reviewed.

Mitigation direction

  • Update iPhone and iPad devices to iOS/iPadOS 15.1 or later.
  • Update macOS Monterey systems to 12.0.1 or later.
  • Update macOS Big Sur systems to 11.6.1 or later.
  • Update Apple TV and Watch fleets to tvOS 15.1 and watchOS 8.1 or later.
  • Check Apple guidance for any platforms or versions not covered here.

Validation and detection

  • Inventory Apple device OS versions against the fixed release list.
  • Prioritize devices with local user access, shared use, or elevated business sensitivity.
  • Confirm update deployment through MDM, endpoint inventory, or device reporting.
  • Review Apple advisories for any product-specific applicability gaps.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2021-30906 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AppleiOS and iPadOSunspecifiedListed
ApplemacOSunspecifiedListed
ApplemacOSunspecifiedListed
ApplemacOSunspecifiedListed
ApplemacOSunspecifiedListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.