What is CVE-2023-23529?

CVE-2023-23529 is a high-severity vulnerability in Apple iOS And Ipados, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 8.8/10. Published 2023-02-27.

How severe is CVE-2023-23529?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-23529 known to be exploited?

Yes. CVE-2023-23529 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-02-14), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Vulnerability in Apple iOS And Ipados

CVE-2023-23529

A type confusion issue was addressed with improved checks. This issue is fixed in iOS 15.7.4 and iPadOS 15.7.4, iOS 16.3.1 and iPadOS 16.3.1, macOS Ventura 13.2.1, Safari 16.3. 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.

Published 2023-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.095 (95.4th percentile), scored 2026-10-18.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.095 · newest: 0.095 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS
Apple macOS — versions unspecified
Apple Safari — versions unspecified

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-02-14. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-03-07.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

support.apple.com/en-us/HT213635 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213638 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213633 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213673 (Release Notes, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2023-23529?: CVE-2023-23529 is a high-severity vulnerability in Apple iOS And Ipados, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 8.8/10. Published 2023-02-27.
How severe is CVE-2023-23529?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-23529 known to be exploited?: Yes. CVE-2023-23529 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-02-14), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.