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CVE-2024-27833: 
Apple Safari vulnerability analysis and mitigation

Overview

An integer overflow vulnerability (CVE-2024-27833) was discovered in WebKit, affecting multiple Apple operating systems including tvOS 17.5, iOS 16.7.8, iPadOS 16.7.8, visionOS 1.2, Safari 17.5, iOS 17.5, and iPadOS 17.5. The vulnerability was discovered by security researcher Manfred Paul (@_manfp) working with Trend Micro Zero Day Initiative and was disclosed on June 10, 2024 (Apple Security, Apple Advisory).

Technical details

The vulnerability is an integer overflow issue in WebKit that was addressed with improved input validation. The vulnerability has been assigned a CVSS v3.1 base score of 8.8 (High) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and user interaction required (NVD).

Impact

When exploited, processing maliciously crafted web content may lead to arbitrary code execution on affected systems. This could potentially allow attackers to execute malicious code within the context of the WebKit process (Apple Security, Apple Advisory).

Exploitability

The vulnerability requires user interaction, typically in the form of processing maliciously crafted web content. The attack vector is network-accessible, making it exploitable remotely. No public exploits have been confirmed at the time of disclosure (NVD).

Mitigation and workarounds

Apple has released security updates to address this vulnerability in multiple products: tvOS 17.5, iOS 16.7.8 and iPadOS 16.7.8, visionOS 1.2, Safari 17.5, iOS 17.5 and iPadOS 17.5. Users are advised to update their devices to the latest versions to receive the security fixes (Apple Security).

Additional resources

Linux Distribution fix status

Fix availability across major Linux distributions and their releases.

Debian

Fixed

bookworm

wpewebkit

Affected

bullseye

wpewebkit

Affected

sid

wpewebkit: 2.44.2-1

Fixed

trixie

wpewebkit: 2.44.2-1

Fixed

Source: This report was generated using AI

Related Apple Safari vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-86922HIGH8.8
  • Apple Safari logoApple Safari
  • webkitgtk3-doc
NoYesOct 20, 2026
CVE-2026-84635MEDIUM6.5
  • Apple Safari logoApple Safari
  • webkit2gtk4-minibrowser
NoYesSep 14, 2026
CVE-2026-86897MEDIUM5.5
  • Apple Safari logoApple Safari
  • Safe Browsing
NoYesSep 14, 2026
CVE-2026-86872MEDIUM5.4
  • Apple Safari logoApple Safari
  • WebKit
NoYesOct 20, 2026
CVE-2026-86898MEDIUM5.4
  • Apple Safari logoApple Safari
  • cpe:2.3:a:apple:safari
NoYesSep 14, 2026

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