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CVE-2023-43000

8.8 · HIGHActively Exploited

A use-after-free issue was addressed with improved memory management.

Published Nov 5, 2025CWE-416EPSS 4.04%

Overview

CVE-2023-43000 is a high-severity vulnerability. It was published on November 5, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refsupport.apple.com/en-us/120324Refsupport.apple.com/en-us/120331Refsupport.apple.com/en-us/120338Refsupport.apple.com/en-us/126632Refcloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kitCISAwww.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000

How CyberStrike helps

Frequently asked questions

What is CVE-2023-43000?

CVE-2023-43000 is a high-severity vulnerability. It was published on November 5, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2023-43000?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-43000?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-43000?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-43000 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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