What is CVE-2026-86872?

CVE-2026-86872 is a medium-severity vulnerability in Apple Safari, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 5.4/10. Published 2026-10-20.

How severe is CVE-2026-86872?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Apple Safari

CVE-2026-86872

A logic issue was addressed with improved state management. This issue is fixed in Safari 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to unexpected behavior.

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

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.

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-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

Frequently asked questions

What is CVE-2026-86872?: CVE-2026-86872 is a medium-severity vulnerability in Apple Safari, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 5.4/10. Published 2026-10-20.
How severe is CVE-2026-86872?: Medium severity. CVSS v3 base score is 5.4 out of 10.