CVE-2023-42824: in the CISA KEV catalogue
Apple iOS and iPadOS Kernel Privilege Escalation Vulnerability. CISA added CVE-2023-42824 to the Known Exploited Vulnerabilities catalogue on 2023-10-05 with a default due date of 2023-10-26. Known ransomware campaign use: Unknown. Forensic triage flag: No.
Apple iOS and iPadOS contain an unspecified vulnerability that allows for local privilege escalation. (CISA description)
- Vendor / product
- Apple iOS and iPadOS
- CWE
- Not listed
- CISA required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS
- 0.97%, percentile 61 (scored 2026-11-03)
EPSS puts about 9.7 in 1,000 odds (0.97%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 61% of scored CVEs. Most CVEs score under 1%, so a high percentile can sit on a small probability: read the percentage first.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2023-42824 in the CISA KEV catalogue?
Yes. CISA added CVE-2023-42824 (Apple iOS and iPadOS Kernel Privilege Escalation Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2023-10-05. CISA's default due date for it is 2023-10-26.
Is CVE-2023-42824 used in ransomware attacks?
CISA marks known ransomware campaign use as Unknown for CVE-2023-42824. That means CISA lacks confirmation, not that ransomware groups do not use it.
What should I do about CVE-2023-42824?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2023-42824