dbcve.org
IpadosOperating system · Apple

CVE-2026-64739

HIGH · 8.8 CVSS v3.1 Published 2026-07-27
Fix available
A fix is available. Upgrade to 14.8.8 / 15.7.8 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges 3 weeks old

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
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An attacker may be able to cause unexpected app termination.

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

This is a memory safety vulnerability where an out-of-bounds write occurs due to insufficient bounds checking. An attacker can trigger this flaw to write data beyond allocated buffer boundaries, leading to memory corruption that causes unexpected application termination.

MitigationUpdate affected Apple devices to the patched versions: iOS/iPadOS 18.7.10 or 26.6+, macOS Sequoia 15.7.8+, macOS Sonoma 14.8.8+, macOS Tahoe 26.6+, tvOS 26.6+, visionOS 26.6+, or watchOS 26.6+.

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:< 26.6
Iphone OsOperating system
Affected:< 26.6
macOSOperating system
Affected:>= 14.0, < 14.8.8>= 15.0, < 15.7.8>= 26.0, < 26.6
TvosOperating system
Affected:< 26.6
VisionosOperating system
Affected:< 26.6
WatchosOperating system
Affected:< 26.6

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
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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. Check iOS version on iPhone
    On the iPhone, go to Settings > General > About > Version. Alternatively, connect to a computer with iTunes or Finder and check the device info, or query via MDM using the 'OSVersion' or 'ProductVersion' attribute.
    Affected if The version is below 26.6 (for example, 26.5.x or earlier)
  2. Check iPadOS version on iPad
    On the iPad, go to Settings > General > About > Version. Alternatively, connect to a computer with iTunes or Finder and check the device info, or query via MDM using the 'OSVersion' or 'ProductVersion' attribute.
    Affected if The version is below 26.6 (for example, 26.5.x or earlier)
  3. Check macOS version
    Click the Apple menu > About This Mac. The version number appears below the macOS name. Alternatively, run 'sw_vers -productVersion' in Terminal, or query via MDM/Jamf using the 'OSVersion' attribute.
    Affected if The version is 14.0 to 14.8.7, 15.0 to 15.7.7, or 26.0 to 26.5.x (falling within any of the three vulnerable ranges)
  4. Check tvOS version on Apple TV
    Go to Settings > General > About > Version on the Apple TV. Alternatively, query via MDM using the 'OSVersion' or 'SoftwareVersion' attribute.
    Affected if The version is below 26.6 (for example, 26.5.x or earlier)
  5. Check visionOS version on Apple Vision Pro
    Go to Settings > General > About > Version on the device. Alternatively, query via MDM using the 'OSVersion' or 'ProductVersion' attribute.
    Affected if The version is below 26.6 (for example, 26.5.x or earlier)
  6. Check watchOS version on Apple Watch
    On the Apple Watch, go to Settings > General > About > Version. On the paired iPhone, open the Watch app > My Watch > General > About. Alternatively, query via MDM using the 'OSVersion' attribute.
    Affected if The version is below 26.6 (for example, 26.5.x or earlier)

You are affected if any of your Apple devices (iPhone, iPad, Mac, Apple TV, Apple Vision Pro, or Apple Watch) run a version lower than the minimum fixed version for their respective platform.

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 14.8.8 / 15.7.8 / 26.6 or later
Fixed in 14.8.815.7.826.6
Interim mitigation

Update affected Apple devices to the patched versions: iOS/iPadOS 18.7.10 or 26.6+, macOS Sequoia 15.7.8+, macOS Sonoma 14.8.8+, macOS Tahoe 26.6+, tvOS 26.6+, visionOS 26.6+, or watchOS 26.6+.

Recommended fix High confidence

iOS 26.6/iPadOS 26.6, macOS Sonoma 14.8.8+, macOS Sequoia 15.7.8+, macOS Tahoe 26.6+, tvOS 26.6, visionOS 26.6, watchOS 26.6

  1. For iPhone and iPad users: Go to Settings > General > Software Update and upgrade to iOS 26.6 or iPadOS 26.6
  2. For Mac users: Open System Settings > General > Software Update and upgrade to the appropriate version (macOS Sonoma 14.8.8+, macOS Sequoia 15.7.8+, or macOS Tahoe 26.6+)
  3. For Apple TV users: Go to Settings > System > Software Updates and upgrade to tvOS 26.6
  4. For Apple Watch users: Open the Watch app on iPhone, go to General > Software Update and upgrade to watchOS 26.6
  5. For Vision Pro users: Go to Settings > General > Software Update and upgrade to visionOS 26.6
Caveat Standard firmware update risks apply; ensure backup before upgrading

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

Fix this in Ipados Scoped from the published advisory
  • Consultation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
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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-2026-64739 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