AppleCVE-2026-65340

Apple Safari: improper input validation

CVE-2026-65340 · Published Aug 17, 2026 · updated Sep 14, 2026

Medium4.3

Fix: upgrade to 26.6.1 or later (4 fixed versions below)

This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Affected versions

Package	Affected	Fixed in
Safari Product	< 26.6.1	26.6.1
iOS and iPadOS Product	< 18.7.10	18.7.10
	< 26.6.1	26.6.1
macOS Product	< 26.6.2	26.6.2
visionOS Product	< 27	27

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-20, CWE-703

More Apple advisories

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Apple iOS and iPadOS: denial of serviceCVE-2026-65347fixed in 26.6.1 +2 Medium 6.6Aug 17

Apple iOS and iPadOS: out-of-bounds readCVE-2026-65349fixed in 26.6.1 +3 Medium 4.3Aug 17

Apple Safari: unhandled exceptional conditionCVE-2026-65351fixed in 26.6.1 +3