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IpadosOperating system · Apple

CVE-2021-30710

HIGH · 7.1 CVSS v3.1 Published 2021-09-08
Fix available
A fix is available. Upgrade to 7.5 / 11.4 or later.
See remediation →
74/100
Remediation priority · Elevated
No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A memory corruption issue was addressed with improved state management. This issue is fixed in tvOS 14.6, Security Update 2021-004 Mojave, iOS 14.6 and iPadOS 14.6, Security Update 2021-003 Catalina, macOS Big Sur 11.4, watchOS 7.5. A malicious application may cause a denial of service or potentially disclose memory contents.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Memory corruption vulnerability in Apple's operating systems (iOS, iPadOS, macOS, tvOS, watchOS) that allows a malicious application to cause denial of service or potentially disclose memory contents. The issue was addressed through improved state management in the patched versions.

MitigationApply vendor security updates: update to iOS/iPadOS 14.6, macOS Big Sur 11.4, tvOS 14.6, or watchOS 7.5, or apply Security Update 2021-003 for Catalina and Security Update 2021-004 for Mojave.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
IpadosOperating system
Affected:< 14.6
Iphone OsOperating system
Affected:< 14.6
Mac Os XOperating system
Affected:>= 10.14, <= 10.14.5>= 10.15, <= 10.15.6= 10.14.6= 10.15.7
macOSOperating system
Affected:>= 11.0, < 11.4
TvosOperating system
Affected:< 14.6
WatchosOperating system
Affected:< 7.5

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify iOS or iPadOS version
    On the device, go to Settings > General > About and note the version number (e.g., 14.5)
    Affected if The version is lower than 14.6 (e.g., 14.5, 14.5.1, etc.)
  2. Identify macOS version
    Click the Apple menu > About This Mac and note the version number (e.g., 11.3, 10.15.7)
    Affected if The version is Big Sur 11.0-11.3, or Mojave 10.14.x (10.14 to 10.14.6), or Catalina 10.15.x (10.15 to 10.15.7)
  3. Identify tvOS version
    Go to Settings > General > About on Apple TV and note the version number
    Affected if The version is lower than 14.6
  4. Identify watchOS version
    On the paired iPhone, open the Watch app, go to My Watch > General > About and note the version number
    Affected if The version is lower than 7.5

You are affected if any Apple device (iPhone, iPad, Mac, Apple TV, or Apple Watch) runs an OS version below the minimum patched version for that product line.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 7.5 / 11.4 / 14.6 or later
Fixed in 7.511.414.6
Interim mitigation

Apply vendor security updates: update to iOS/iPadOS 14.6, macOS Big Sur 11.4, tvOS 14.6, or watchOS 7.5, or apply Security Update 2021-003 for Catalina and Security Update 2021-004 for Mojave.

Recommended fix High confidence

iOS/iPadOS 14.6, macOS Big Sur 11.4, macOS Catalina Security Update 2021-003, macOS Mojave Security Update 2021-004, tvOS 14.6, watchOS 7.5

  1. Identify the affected Apple device (iPhone, iPad, Mac, Apple TV, or Apple Watch)
  2. Determine the current installed version from Settings > General > About (iOS/iPadOS) or System Preferences > Software Update (macOS)
  3. For iPhone/iPad: Go to Settings > General > Software Update and install iOS/iPadOS 14.6
  4. For Mac running macOS Big Sur (11.x): Go to System Preferences > Software Update and install macOS Big Sur 11.4
  5. For Mac running macOS Catalina (10.15): Install Security Update 2021-003 via System Preferences > Software Update
  6. For Mac running macOS Mojave (10.14): Install Security Update 2021-004 via System Preferences > Software Update
  7. For Apple TV: Go to Settings > System > Software Updates and install tvOS 14.6
  8. For Apple Watch: On iPhone, open Watch app > General > Software Update and install watchOS 7.5
Caveat Review app compatibility before upgrading; older apps may not function on updated OS versions

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Ipados Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-30710 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data