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IpadosOperating system · Apple

CVE-2026-28852

MEDIUM · 5.5 CVSS v3.1 Published 2026-03-25
Fix available
A fix is available. Upgrade to 15.7.5 / 18.7.7 or later.
See remediation →
58/100
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 stack overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An app may be able to cause a denial-of-service.

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

A stack overflow vulnerability in Apple's operating systems (iOS, iPadOS, macOS, tvOS, visionOS, watchOS) allows a malicious application to trigger excessive stack allocation, leading to a denial-of-service condition. The vulnerability was addressed through improved input validation.

MitigationApply the vendor-supplied security updates: iOS 18.7.7 and iOS 26.4+, iPadOS 18.7.7 and iPadOS 26.4+, macOS Sequoia 15.7.5 and macOS Tahoe 26.4+, tvOS 26.4, visionOS 26.4, watchOS 26.4.

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:< 18.7.7>= 26.0, < 26.4
Iphone OsOperating system
Affected:< 18.7.7>= 26.0, < 26.4
macOSOperating system
Affected:>= 15.0, < 15.7.5>= 26.0, < 26.4
TvosOperating system
Affected:< 26.4
VisionosOperating system
Affected:< 26.4
WatchosOperating system
Affected:< 26.4

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
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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 your Apple operating system and version
    On iOS/iPadOS: go to Settings > General > About; on macOS: go to System Settings > General > About; on tvOS/watchOS/visionOS: go to Settings > General > About. Note the version number displayed.
    Affected if Unable to determine the OS version from system settings
  2. Check iOS or iPadOS version against affected ranges
    If running iOS or iPadOS, compare your version number to: any version below 18.7.7, or any version from 26.0 up to (but not including) 26.4. These ranges are vulnerable.
    Affected if Your iOS version is < 18.7.7 OR (>= 26.0 AND < 26.4), or your iPadOS version is < 18.7.7 OR (>= 26.0 AND < 26.4)
  3. Check macOS version against affected ranges
    If running macOS, compare your version to: any version from 15.0 up to (but not including) 15.7.5, or any version from 26.0 up to (but not including) 26.4. These ranges are vulnerable.
    Affected if Your macOS version is >= 15.0 AND < 15.7.5, OR >= 26.0 AND < 26.4
  4. Check tvOS, visionOS, or watchOS version against affected ranges
    If running tvOS, visionOS, or watchOS, compare your version to any version below 26.4. All versions prior to 26.4 are vulnerable.
    Affected if Your tvOS version is < 26.4, your visionOS version is < 26.4, or your watchOS version is < 26.4

You are affected if your Apple OS version matches any of the vulnerable ranges: iOS/iPadOS < 18.7.7 or 26.0-26.3, macOS 15.0-15.7.4 or 26.0-26.3, or any tvOS/visionOS/watchOS version below 26.4.

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 15.7.5 / 18.7.7 / 26.4 or later
Fixed in 15.7.518.7.726.4
Interim mitigation

Apply the vendor-supplied security updates: iOS 18.7.7 and iOS 26.4+, iPadOS 18.7.7 and iPadOS 26.4+, macOS Sequoia 15.7.5 and macOS Tahoe 26.4+, tvOS 26.4, visionOS 26.4, watchOS 26.4.

Recommended fix High confidence

iOS 18.7.7 and iPadOS 18.7.7 (for <18.7.7); iOS 26.4 and iPadOS 26.4 (for >=26.0,<26.4); macOS Sequoia 15.7.5 (for >=15.0,<15.7.5); macOS Tahoe 26.4 (for >=26.0,<26.4); tvOS 26.4; visionOS 26.4; watchOS 26.4

  1. Check the current version of the affected Apple device (iPhone, iPad, Mac, Apple TV, Apple Vision Pro, or Apple Watch)
  2. On iPhone/iPad: Go to Settings > General > Software Update to check for and install the update
  3. On Mac: Go to System Settings > General > Software Update to check for and install the update
  4. On Apple TV: Go to Settings > System > Software Updates > Update Software
  5. On Apple Watch: On the connected iPhone, open the Watch app and go to General > Software Update
  6. On Apple Vision Pro: Go to Settings > General > Software Update
  7. Apply the appropriate update: iOS/iPadOS 18.7.7, iOS/iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, or watchOS 26.4 depending on your device and current version
Caveat Standard minor/patch OS updates typically have low risk of breaking changes; major version jumps (e.g., to macOS Tahoe 26.x) may introduce compatibility considerations

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

Fix this in Ipados Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $890
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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-2026-28852 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