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Vulnerability record · CVE-2024-44308 · published 20 November 2024

CVE-2024-44308: Apple WebKit code execution via malicious web content

Debian · Debian Linux

Apple fixed a WebKit flaw with improved checks across Safari, iOS, iPadOS, macOS and visionOS. Processing maliciously crafted web content can lead to arbitrary code execution, and Apple states the issue may have been actively exploited on Intel-based Mac systems.

8.8 CVSS 3.1 High CISA KEV since 21 Nov 2024 EPSS 10% · top 4.5%
8.8CVSS 3.1 base score
10%EPSS exploitation probability, 30 days
YesIn CISA KEV, fix deadline passed
6Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

The issue was addressed with improved checks. This issue is fixed in Safari 18.1.1, iOS 17.7.2 and iPadOS 17.7.2, iOS 18.1.1 and iPadOS 18.1.1, macOS Sequoia 15.1.1, visionOS 2.1.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 17 September 2026. Confidence: medium.

high priorityCVSS 8.8 with no privileges required, active exploitation reported by Apple, and inclusion in CISA KEV with a near-term remediation deadline.

What it is

Apple fixed a WebKit flaw with improved checks across Safari, iOS, iPadOS, macOS and visionOS. Processing maliciously crafted web content can lead to arbitrary code execution, and Apple states the issue may have been actively exploited on Intel-based Mac systems.

Impact

An attacker who gets a victim to load crafted web content can execute arbitrary code in the context of the affected browser or system component, with high confidentiality, integrity and availability impact.

Attack surface

Reached over the network by serving malicious web content to a browsing user; the CVSS vector requires user interaction (UI:R) and no privileges (PR:N). No authentication is needed beyond the victim visiting or rendering the content.

Exploitation

Listed in CISA KEV with a due date of 2024-12-12, and Apple reports a possible active exploitation report on Intel-based Macs; EPSS 30-day probability is about 10.2 percent (95th percentile).

What to do

  • Update to the fixed versions: Safari 18.1.1, iOS/iPadOS 17.7.2 and 18.1.1, macOS Sequoia 15.1.1, visionOS 2.1.1, and apply Debian's advisory for its packages.
  • Prioritize patching Intel-based Macs, which Apple specifically named in the exploitation report.
  • Enforce the CISA KEV remediation deadline of 2024-12-12 for internet-facing Apple endpoints.
  • Where immediate patching is not possible, restrict browsing of untrusted web content and reduce exposure of affected devices.
  • Track vendor advisories for any further updates or revised fixed versions.

Detection

  • Monitor for crashes or unexpected process behavior in Safari, WebKit and related Apple components on patched and unpatched hosts.
  • Hunt for suspicious child processes or code execution spawned from browser processes on macOS and iOS devices.
  • Review endpoint telemetry for exploitation attempts against Intel-based Macs around the KEV publication window.
  • Check asset inventories for devices still running versions below the fixed releases listed in Apple advisories.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.

Exploitation in the wild

CISA added CVE-2024-44308 to the Known Exploited Vulnerabilities catalog on 21 November 2024 as "Apple Multiple Products Code Execution Vulnerability". Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Federal deadline 12 December 2024.

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.apple.com/en-us/121752 Vendor Advisory
https://support.apple.com/en-us/121753 Vendor Advisory
https://support.apple.com/en-us/121754 Vendor Advisory
https://support.apple.com/en-us/121755 Vendor Advisory
https://support.apple.com/en-us/121756 Vendor Advisory
http://seclists.org/fulldisclosure/2024/Nov/16 Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2024/12/msg00003.html Mailing List
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-44308 US Government Resource

Track CVE-2024-44308 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-44308), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.