CVE-2026-64718 - Vulnerability Details

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, Safari 27, iOS 26.6 and iPadOS 26.6, iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, visionOS 27, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Published: 2026-07-27

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

A use‑after‑free vulnerability in Safari enables attackers to send malicious web content that causes the browser to dereference freed memory, leading to an unexpected crash. The issue is confined to the web rendering engine and does not grant attackers code execution or privilege escalation; it results in a denial‑of‑service by terminating the browser instance. The vulnerability is mitigated in Safari 26.6 and newer, iOS 26.6/26.7/27 and iPadOS 26.6/26.7/27, macOS Golden Gate 27 and Tahoe 26.6, tvOS 26.6, visionOS 26.6/27, and watchOS 26.6.

Affected Systems

Apple Safari, iOS, iPadOS, Apple macOS, tvOS, visionOS, and watchOS. Versions before 26.6 of each product are affected; the issue is iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.

Risk and Exploitability

The vulnerability is not publicly associated with a known exploit and is not listed in CISA’s KEV catalog. The CVSS score of 5.5 indicates moderate severity. The EPSS score of <1% indicates a very low but nonzero exploitation probability web content to a user’s Safari session;. The impact is limited to a denial‑of‑service by crashing the browser.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Apple

Safari

affected

Version	Status	Constraints
`0`	affected	< 26.6
`0`	affected	< 27

Apple

iOS and iPadOS

affected

Version	Status	Constraints
`0`	affected	< 26.6
`0`	affected	< 26.7
`0`	affected	< 27

Apple

macOS

affected

Version	Status	Constraints
`0`	affected	< 26.6
`0`	affected	< 27

Apple

tvOS

affected

Version	Status	Constraints
`0`	affected	< 26.6

Apple

visionOS

affected

Version	Status	Constraints
`0`	affected	< 26.6
`0`	affected	< 27

Apple

watchOS

affected

Version	Status	Constraints
`0`	affected	< 26.6

Configuration 1 [-]

OR	cpe:2.3:a:apple:safari::::::::
	cpe:2.3:o:apple:ipados::::::::
	cpe:2.3:o:apple:iphone_os::::::::
	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:tvos::::::::
	cpe:2.3:o:apple:visionos::::::::
	cpe:2.3:o:apple:watchos::::::::

No data.

Vendor Product Confidence Versions

Apple

Ios And Ipados

100%

Version	Status	Scheme	Platform
`[0,26.6)`	affected	generic	—

Apple

Macos

100%

Version	Status	Scheme	Platform
`[0,26.6)`	affected	generic	—

Apple

Safari

100%

Version	Status	Scheme	Platform
`[0,26.6)`	affected	generic	—

Apple

Tvos

100%

Version	Status	Scheme	Platform
`[0,26.6)`	affected	generic	—

Apple

Visionos

100%

Version	Status	Scheme	Platform
`[0,26.6)`	affected	generic	—

Apple

Watchos

100%

Version	Status	Scheme	Platform
`[0,26.6)`	affected	generic	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Install Safari 26.6 or later, or update iOS 26.6 and iPadOS 26.6
Install macOS Tahoe 26.6 and update tvOS, visionOS, and watchOS to 26.6 or later
Ensure devices run the latest operating system and app updates to maintain the patch

Generated by OpenCVE AI on September 21, 2026 at 06:44 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00211.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128068
https://support.apple.com/en-us/128069
https://support.apple.com/en-us/128070
https://support.apple.com/en-us/128073
https://support.apple.com/en-us/149034
https://support.apple.com/en-us/149035
https://support.apple.com/en-us/149038
https://support.apple.com/en-us/149039
https://support.apple.com/en-us/149041

History

Mon, 21 Sep 2026 07:00:00 +0000

Type	Values Removed	Values Added
Title	Use‑After‑Free Leading to Safari Crash via Malicious Web Content

Mon, 14 Sep 2026 21:00:00 +0000

Type	Values Removed	Values Added
Description	A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.	A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, Safari 27, iOS 26.6 and iPadOS 26.6, iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, visionOS 27, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References		https://support.apple.com/en-us/149034 https://support.apple.com/en-us/149035 https://support.apple.com/en-us/149038 https://support.apple.com/en-us/149039 https://support.apple.com/en-us/149041

Wed, 05 Aug 2026 00:30:00 +0000

Type	Values Removed	Values Added
Title		Use‑After‑Free Leading to Safari Crash via Malicious Web Content
Weaknesses		CWE-416

Tue, 04 Aug 2026 14:00:00 +0000

Type	Values Removed	Values Added
Title	Use‑After‑Free Crash in Safari and Apple Web Browsers
Weaknesses	CWE-416

Tue, 28 Jul 2026 16:15:00 +0000

Type	Values Removed	Values Added
Title		Use‑After‑Free Crash in Safari and Apple Web Browsers
Weaknesses		CWE-416

Tue, 28 Jul 2026 03:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Apple Apple ios And Ipados Apple macos Apple safari Apple tvos Apple visionos Apple watchos
Vendors & Products		Apple Apple ios And Ipados Apple macos Apple safari Apple tvos Apple visionos Apple watchos

Mon, 27 Jul 2026 20:30:00 +0000

Type	Values Removed	Values Added
Description		A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References		https://support.apple.com/en-us/128066 https://support.apple.com/en-us/128067 https://support.apple.com/en-us/128068 https://support.apple.com/en-us/128069 https://support.apple.com/en-us/128070 https://support.apple.com/en-us/128073

Subscriptions

Apple Ios And Ipados Ipados Iphone Os Macos Safari Tvos Visionos Watchos

MITRE

Status: PUBLISHED

Assigner: apple

Published: 2026-07-27T20:12:07.210Z

Updated: 2026-09-14T20:47:22.131Z

Reserved: 2026-07-20T18:09:35.084Z

Link: CVE-2026-64718

Vulnrichment

No data.

NVD

Status : Modified

Published: 2026-07-27T21:17:10.753

Modified: 2026-09-14T21:17:14.467

Link: CVE-2026-64718

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-21T06:45:10Z

Weaknesses

CWE-416
Use After Free

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

Subscriptions

JSON object

JSON object

JSON object

JSON object

JSON object