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Vulnerability record · public intelligence
CVE-2021-30916
UNKNOWN

CVE-2021-30916

Published Aug 24, 2021 · Updated Nov 3, 2026

Severity · CVSSUNKNOWN · Not scored
Known exploitationNot listed
EPSS / likelihood1.56%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

FIRST-EPSSCVE-LIST-V5
SSVC priority
MEDIUM
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. support.apple.com ↗
  2. support.apple.com ↗
  3. support.apple.com ↗
  4. support.apple.com ↗
  5. support.apple.com ↗
  6. support.apple.com ↗
  7. support.apple.com ↗
  8. 20211217 APPLE-SA-2021-12-15-5 tvOS 15.2 ↗
  9. 20211217 APPLE-SA-2021-12-15-6 watchOS 8.3 ↗

Record history

Published Aug 24, 2021 · Last refreshed Nov 3, 2026

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