What is CVE-2026-84636?

CVE-2026-84636 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Authorization. CVSS score: 5.5/10. Published 2026-09-14.

How severe is CVE-2026-84636?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2026-84636 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Apple iOS And Ipados

CVE-2026-84636

An authorization issue was addressed with improved state management. This issue is fixed in iOS 27 and iPadOS 27, tvOS 27, visionOS 27, watchOS 27. An app may be able to access sensitive user data.

Published 2026-09-14 · last modified 2026-09-18.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.3th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-285 — Improper Authorization

Public proof-of-concept exploits

speedyfriend433/CVE-2026-84636-PoC

References

support.apple.com/en-us/149034 (Vendor Advisory)
support.apple.com/en-us/149036 (Vendor Advisory)
support.apple.com/en-us/149037 (Vendor Advisory)
support.apple.com/en-us/149038 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-84636?: CVE-2026-84636 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Authorization. CVSS score: 5.5/10. Published 2026-09-14.
How severe is CVE-2026-84636?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2026-84636 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.