dbcve.org
SafariWeb browser · Apple

CVE-2024-54543

HIGH · 8.8 CVSS v3.1 Published 2025-01-27
Fix available
A fix is available. Upgrade to 2.2 / 11.2 or later.
See remediation →
95/100
Remediation priority · Urgent
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 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.6, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2. Processing maliciously crafted web content may lead to memory corruption.

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 · moderate confidence

Memory corruption vulnerability in WebKit (Safari's rendering engine) that can be triggered by processing maliciously crafted web content, leading to potential arbitrary code execution. Fixed versions across multiple Apple platforms address the memory handling issue.

MitigationUpdate affected Apple products to the patched versions (Safari 18.2, iOS/iPadOS 18.2 or 17.7.6, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2).

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:< 18.2
IpadosOperating system
Affected:< 18.2
Iphone OsOperating system
Affected:< 18.2
macOSOperating system
Affected:< 15.2
TvosOperating system
Affected:< 18.2
VisionosOperating system
Affected:< 2.2
WatchosOperating system
Affected:< 11.2

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. Identify the Apple platform and product
    Determine which Apple product is in use: Safari browser (macOS/iOS/iPadOS), or the native OS on iPhone, iPad, Mac, Apple TV, Vision Pro, or Apple Watch. Check the system settings or About menu for the product name.
    Affected if The product is any of the following: Safari, iOS, iPadOS, macOS, tvOS, visionOS, or watchOS.
  2. Check Safari version on macOS
    Open Safari, go to Safari > About Safari. Compare the displayed version number to 18.2.
    Affected if Safari version is lower than 18.2 (for example, 18.1.x or earlier).
  3. Check iOS or iPadOS version on iPhone or iPad
    Go to Settings > General > About. Look for the Software Version field. Compare to 18.2.
    Affected if iOS or iPadOS version is lower than 18.2 (or between 18.0 and 18.1.x). Note: iOS 17.7.6 is also a patched alternative.
  4. Check macOS version on Mac
    Go to System Settings > General > About. Look for the macOS version (such as Sequoia 15.1). Compare the build number or version to 15.2.
    Affected if macOS version is lower than 15.2 (for example, 15.1.x or earlier).
  5. Check tvOS, visionOS, or watchOS version
    On Apple TV: go to Settings > General > About > Version. On Vision Pro: go to Settings > General > About. On Apple Watch: open the Watch app on iPhone, go to My Watch > General > About. Compare the displayed version to the threshold (tvOS/visionOS: 18.2, watchOS: 11.2).
    Affected if tvOS is below 18.2, visionOS is below 2.2, or watchOS is below 11.2.

A system is affected if it runs any Safari, iOS, iPadOS, macOS, tvOS, visionOS, or watchOS version below the threshold numbers (18.2 for Safari/iOS/tvOS, 15.2 for macOS, 2.2 for visionOS, 11.2 for watchOS), since all these use WebKit and the vulnerability can be triggered by malicious web content processed by WebKit.

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 2.2 / 11.2 / 15.2 or later
Fixed in 2.211.215.2
Interim mitigation

Update affected Apple products to the patched versions (Safari 18.2, iOS/iPadOS 18.2 or 17.7.6, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2).

Recommended fix High confidence

Minimum fixed versions: Safari 18.2, iOS 18.2, iPadOS 18.2 (or 17.7.6), macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2

  1. For iPhone: Upgrade to iOS 18.2 via Settings > General > Software Update
  2. For iPad: Upgrade to iPadOS 18.2 (or iPadOS 17.7.6 for older devices) via Settings > General > Software Update
  3. For Mac: Upgrade to macOS Sequoia 15.2 via System Settings > General > Software Update
  4. For Safari: Upgrade to Safari 18.2 by updating macOS to 15.2, or update Safari via App Store > Updates on older macOS
  5. For Apple TV: Upgrade to tvOS 18.2 via Settings > General > Software Update
  6. For Apple Vision Pro: Upgrade to visionOS 2.2 via Settings > General > Software Update
  7. For Apple Watch: Upgrade to watchOS 11.2 via the Watch app on iPhone > General > Software Update
  8. After upgrading, verify the version number matches the fixed release in Settings > General > About
Caveat Standard OS upgrade considerations apply - back up device before upgrading; some older apps may not be compatible with major OS updates

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

Fix this in Safari Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 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-2024-54543 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