What is CVE-2026-86921?

CVE-2026-86921 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Privilege Management. CVSS score: 6.2/10. Published 2026-10-20.

How severe is CVE-2026-86921?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Privilege escalation in Apple iOS And Ipados

CVE-2026-86921

A permissions issue was addressed with improved validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. A local attacker may be able to overwrite restricted files.

Vulnerability class: Privilege Escalation

Published 2026-10-20 · last modified 2026-10-20.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

Frequently asked questions

What is CVE-2026-86921?: CVE-2026-86921 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Privilege Management. CVSS score: 6.2/10. Published 2026-10-20.
How severe is CVE-2026-86921?: Medium severity. CVSS v3 base score is 6.2 out of 10.