What is CVE-2021-30825?

CVE-2021-30825 is a high-severity vulnerability in Apple iOS And Ipados. CVSS score: 7.8/10. Published 2021-10-19.

How severe is CVE-2021-30825?

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

Vulnerability in Apple iOS And Ipados

CVE-2021-30825

This issue was addressed with improved checks. This issue is fixed in iOS 15 and iPadOS 15. A local attacker may be able to cause unexpected application termination or arbitrary code execution.

Published 2021-10-19 · 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: 0.005 (43.1th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

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

References

support.apple.com/en-us/HT212814 (Release Notes, Vendor Advisory)
seclists.org/fulldisclosure/2021/Oct/61 (mailing-list, Mailing List, Third Party Advisory)
www.zerodayinitiative.com/advisories/ZDI-22-354/ (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-30825?: CVE-2021-30825 is a high-severity vulnerability in Apple iOS And Ipados. CVSS score: 7.8/10. Published 2021-10-19.
How severe is CVE-2021-30825?: High severity. CVSS v3 base score is 7.8 out of 10.