CVE-2023-43000

Name: CVE-2023-43000
Creator: NVD / NIST
Published: 2025-11-05T19:15:47.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 3.90%

Last modified Jun 17, 2026

CVE-2023-43000 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 3.90% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

3.90%

88.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Mar 26, 2026.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Safari	< 16.6
Apple	Ipados	< 15.8.7
Apple	Ipados	>= 16.0, < 16.6
Apple	Iphone Os	< 15.8.7
Apple	Iphone Os	>= 16.0, < 16.6
Apple	Macos	< 13.5

References

https://support.apple.com/en-us/120324Release Notes, Vendor Advisory
https://support.apple.com/en-us/120331Release Notes, Vendor Advisory
https://support.apple.com/en-us/120338Release Notes, Vendor Advisory
https://support.apple.com/en-us/126632Release Notes, Vendor Advisory
https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kitExploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000US Government Resource

Timeline

Published: Nov 5, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-43000?

How severe is CVE-2023-43000?

CVE-2023-43000 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.90% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-43000?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-43000?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST