What is CVE-2026-28873?

CVE-2026-28873 is a high-severity vulnerability in Apple iOS And Ipados, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-05-11.

How severe is CVE-2026-28873?

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

Auth bypass in Apple iOS And Ipados

CVE-2026-28873

This issue was addressed with additional entitlement checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.4 and iPadOS 26.4. An app may be able to circumvent App Privacy Report logging.

Vulnerability class: Broken Access Control

Published 2026-05-11 · 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 (28.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.2% 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-863 — Incorrect Authorization

References

support.apple.com/en-us/126792 (Release Notes, Vendor Advisory)
support.apple.com/en-us/127111 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28873?: CVE-2026-28873 is a high-severity vulnerability in Apple iOS And Ipados, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-05-11.
How severe is CVE-2026-28873?: High severity. CVSS v3 base score is 7.5 out of 10.