CVE-2023-43000

Apple Multiple products Use-After-Free Vulnerability

High 8.8
Exploited: added to CISA KEV 5 Mar 2026

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.

Key facts

Published: 5 Nov 2025
Last changed: 21 Sep 2026
Assigned by: apple
KEV added: 5 Mar 2026
KEV fix due: 26 Mar 2026
EPSS: 4.042% likely to be exploited in the next 30 days, higher than 90.784% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

8.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What to do

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
Apple	macOS	unspecified up to but excluding 13.5 (affected)
Apple	iOS and iPadOS	unspecified up to but excluding 16.6 (affected)
Apple	Safari	unspecified up to but excluding 16.6 (affected)
Apple	iOS and iPadOS	unspecified up to but excluding 15.8.7 (affected)