What is CVE-2026-28855?

CVE-2026-28855 is a high-severity vulnerability in Apple iOS And Ipados, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-03-25.

How severe is CVE-2026-28855?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apple iOS And Ipados

CVE-2026-28855

A permissions issue was addressed with additional restrictions. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3. An app may be able to access protected user data.

Published 2026-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

support.apple.com/en-us/126346 (Vendor Advisory)
support.apple.com/en-us/126348 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-28855?: CVE-2026-28855 is a high-severity vulnerability in Apple iOS And Ipados, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-03-25.
How severe is CVE-2026-28855?: High severity. CVSS v3 base score is 7.5 out of 10.