What is CVE-2026-28856?

CVE-2026-28856 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Access Control. CVSS score: 4.6/10. Published 2026-03-25.

How severe is CVE-2026-28856?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Vulnerability in Apple iOS And Ipados

CVE-2026-28856

The issue was addressed with improved authentication. This issue is fixed in iOS 26.4 and iPadOS 26.4, visionOS 26.4, watchOS 26.4. An attacker with physical access to a locked device may be able to view sensitive user information.

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

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (14.8th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.8% 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: 0.003 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

support.apple.com/en-us/126792 (Release Notes, Vendor Advisory)
support.apple.com/en-us/126798 (Release Notes, Vendor Advisory)
support.apple.com/en-us/126799 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28856?: CVE-2026-28856 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Access Control. CVSS score: 4.6/10. Published 2026-03-25.
How severe is CVE-2026-28856?: Medium severity. CVSS v3 base score is 4.6 out of 10.