CVE-2023-43000
HIGH CISA KEVCVSS v3
8.8
HIGH
EPSS Score
0.1%
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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. Processing maliciously crafted web content may lead to memory corruption.
CISA Known Exploited Vulnerability
- Date Added
- 3/5/2026
- Patch Due Date
- 3/26/2026
- Required Action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 11/5/2025
- Last Modified
- 11/7/2025
Frequently Asked Questions
What is CVE-2023-43000?
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. Processing maliciously crafted web content may lead to memory corruption.
Is CVE-2023-43000 actively exploited?
Yes. CVE-2023-43000 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 3/26/2026.
What is the CVSS score for CVE-2023-43000?
CVE-2023-43000 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string 3.1.
Is CVE-2023-43000 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.