dbcve.org
SafariWeb browser · Apple

CVE-2025-43213

MEDIUM · 6.5 CVSS v3.1 Published 2025-07-30
Fix available
A fix is available. Upgrade to 2.6 / 11.6 or later.
See remediation →
72/100
Remediation priority · Elevated
Remotely reachable 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
The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

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 memory handling vulnerability in WebKit allows processing of maliciously crafted web content to cause an unexpected Safari crash. The issue was addressed with improved memory handling in Safari 18.6, iOS 18.6, iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, and watchOS 11.6.

MitigationApply the vendor-supplied updates (Safari 18.6, iOS/iPadOS 18.6, macOS Sequoia 15.6, or later versions) to all affected Apple devices to remediate this vulnerability.

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
SafariWeb browser
Affected:< 18.6
IpadosOperating system
Affected:< 18.6
Iphone OsOperating system
Affected:< 18.6
macOSOperating system
Affected:< 15.6
TvosOperating system
Affected:< 18.6
VisionosOperating system
Affected:< 2.6
WatchosOperating system
Affected:< 11.6

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
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/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 product
    Determine which Apple device you are running this check on (iPhone, iPad, Mac, Apple TV, Apple Watch, or Apple Vision Pro).
    Affected if Any Apple device running a version below the fixed release for that product line.
  2. Check Safari version on macOS
    Open Safari, go to Safari menu > About Safari. The version number is displayed next to 'Safari'. Compare it to 18.6.
    Affected if Safari version is earlier than 18.6 on macOS.
  3. Check iOS version on iPhone or iPad
    Go to Settings > General > About. The version number is shown next to 'Version'. Compare it to 18.6 for iOS/iPadOS.
    Affected if iOS or iPadOS version is earlier than 18.6.
  4. Check macOS version on Mac
    Go to Apple menu > About This Mac. The version number (such as 15.6 for Sequoia) is displayed. Compare to 15.6.
    Affected if macOS version is earlier than 15.6 (pre-Sequoia 15.6).
  5. Check tvOS, visionOS, or watchOS version
    On Apple TV: go to Settings > General > About > Version. On Apple Watch: open Settings app on watch, go to General > About. On Apple Vision Pro: go to Settings > General > About. Compare the version to the respective fixed release (tvOS 18.6, visionOS 2.6, watchOS 11.6).
    Affected if tvOS is earlier than 18.6, visionOS is earlier than 2.6, or watchOS is earlier than 11.6.

You are affected if any of your Apple devices (Safari, iOS, iPadOS, macOS, tvOS, visionOS, or watchOS) are running a version lower than the respective fixed release (18.6 for Safari/iOS/iPadOS/tvOS, 15.6 for macOS, 2.6 for visionOS, 11.6 for watchOS).

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 2.6 / 11.6 / 15.6 or later
Fixed in 2.611.615.6
Interim mitigation

Apply the vendor-supplied updates (Safari 18.6, iOS/iPadOS 18.6, macOS Sequoia 15.6, or later versions) to all affected Apple devices to remediate this vulnerability.

Recommended fix High confidence

Safari 18.6, iOS 18.6, iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6

  1. Identify the Apple device type (iPhone, iPad, Mac, Apple TV, Apple Watch, Apple Vision Pro)
  2. Check the current OS version on the device in Settings > General > About (iOS/iPadOS) or System Settings > About (macOS)
  3. For iPhone/iPad: Go to Settings > General > Software Update and install iOS 18.6 or iPadOS 18.6
  4. For Mac: Go to System Settings > General > Software Update and install macOS Sequoia 15.6
  5. For Apple TV: Go to Settings > System > Software Updates and install tvOS 18.6
  6. For Apple Watch: Go to Settings > General > Software Update on the watch or via iPhone Watch app and install watchOS 11.6
  7. For Apple Vision Pro: Go to Settings > General > Software Updates and install visionOS 2.6
  8. After updating, verify the Safari version is 18.6 or higher
Caveat Standard update precautions apply; backup important data before updating

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

Fix this in Safari Scoped from the published advisory
  • Consultation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
3.0 hours of engineering $750
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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-2025-43213 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