What is CVE-2023-42824?

CVE-2023-42824 is a high-severity vulnerability in Apple iOS And Ipados. CVSS score: 7.8/10. Published 2023-10-04.

How severe is CVE-2023-42824?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-42824 known to be exploited?

Yes. CVE-2023-42824 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-10-05), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Vulnerability in Apple iOS And Ipados

CVE-2023-42824

The issue was addressed with improved checks. This issue is fixed in iOS 16.7.1 and iPadOS 16.7.1. A local attacker may be able to elevate their privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.6.

Published 2023-10-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.2th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.000

Affected products

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

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-10-05. 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: 2023-10-26.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

support.apple.com/en-us/HT213972 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2023-42824?: CVE-2023-42824 is a high-severity vulnerability in Apple iOS And Ipados. CVSS score: 7.8/10. Published 2023-10-04.
How severe is CVE-2023-42824?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-42824 known to be exploited?: Yes. CVE-2023-42824 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-10-05), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.