What is CVE-2026-20686?

CVE-2026-20686 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-03-25.

How severe is CVE-2026-20686?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Apple iOS And Ipados

CVE-2026-20686

This issue was addressed with improved input validation. This issue is fixed in iOS 26.3 and iPadOS 26.3. An app may be able to access sensitive user data.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.002 (9.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Apple Ios And Ipados — versions 0
Apple Ipados
Apple Iphone_os

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-20686?: CVE-2026-20686 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-03-25.
How severe is CVE-2026-20686?: Medium severity. CVSS v3 base score is 5.3 out of 10.