What is CVE-2026-84518?

CVE-2026-84518 is a medium-severity vulnerability in Apple iOS And Ipados, classified under CWE-642. CVSS score: 4.3/10. Published 2026-09-14.

How severe is CVE-2026-84518?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Apple iOS And Ipados

CVE-2026-84518

This issue was addressed through improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27. A malicious website may be able to determine what apps a user has installed.

Published 2026-09-14 · last modified 2026-09-16.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (26.0th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% 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-642

References

support.apple.com/en-us/149034 (Release Notes, Vendor Advisory)
support.apple.com/en-us/149035 (Release Notes, Vendor Advisory)
support.apple.com/en-us/149039 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-84518?: CVE-2026-84518 is a medium-severity vulnerability in Apple iOS And Ipados, classified under CWE-642. CVSS score: 4.3/10. Published 2026-09-14.
How severe is CVE-2026-84518?: Medium severity. CVSS v3 base score is 4.3 out of 10.