Description
A memory corruption vulnerability was addressed with improved locking. 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. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Published: 2026-08-17
Score: 3.1 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A memory corruption vulnerability (CWE-362, CWE-667) was caused by improper locking during content processing in Safari. Maliciously crafted web content can trigger an unexpected Safari crash, resulting in application termination. The issue has been fixed in Safari 26.6.1, iOS 18.7.10 and 26.6.1, iPadOS 18.7.10 and 26.6.1, and macOS Tahoe 26.6.2.

Affected Systems

Apple iOS devices running versions prior to 18.7.10 or 26.6.1, Apple iPadOS devices running versions prior to 18.7.10 or 26.6.1, and Apple macOS Tahoe builds prior to 26.6.2 are affected. All devices that run Safari on those operating systems are vulnerable.

Risk and Exploitability

The vulnerability, a memory corruption involving improper locking (CWE-362, CWE-667), has no known code-execution impact and is limited to a crash that affects availability; the CVSS score is 3.1, indicating low severity. Because the EPSS score is < 1% and it is not listed in the CISA KEV catalog, the likelihood of widespread exploitation appears low. However, malicious actors could craft web pages designed to trigger the crash on vulnerable devices, potentially disrupting services or causing denial of service for users who rely on Safari for critical tasks. The remediation procedure focuses on applying the latest system updates that contain the locking fix.

Generated by OpenCVE AI on August 27, 2026 at 01:42 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade all affected Apple devices to iOS 18.7.10 or later, iOS 26.6.1 or later, iPadOS 18.7.10 or later, iPadOS 26.6.1 or later, and macOS Tahoe 26.6.2 or later.
  • Ensure that automatic software updates are enabled so that devices receive future security patches without manual intervention.
  • Monitor Safari crash logs on devices that are unable to run the latest patches and isolate them from any critical web services until the update can be applied.

Generated by OpenCVE AI on August 27, 2026 at 01:42 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 27 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Title webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
Weaknesses CWE-667
References
Metrics threat_severity

None

 threat_severity

Important

Tue, 18 Aug 2026 22:45:00 +0000

Type Values Removed Values Added
Title Safari Memory Corruption Causing Crashes due to Improper Locking

Tue, 18 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Apple ipados
Apple iphone Os
Apple safari
CPEs 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:*:*:*:*:*:*:*:*
Vendors & Products Apple ipados
Apple iphone Os
Apple safari

Tue, 18 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Title Safari Memory Corruption Causing Crashes due to Improper Locking

Tue, 18 Aug 2026 18:15:00 +0000

Type Values Removed Values Added
Description A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash. A memory corruption vulnerability was addressed with improved locking. 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. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References

Tue, 18 Aug 2026 17:45:00 +0000

Type Values Removed Values Added
Title Memory Corruption in Safari Causing Crash via Malicious Web Content
Weaknesses CWE-122
CWE-125

Tue, 18 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 17 Aug 2026 23:45:00 +0000

Type Values Removed Values Added
Title Memory Corruption in Safari Causing Crash via Malicious Web Content
Weaknesses CWE-122
CWE-125

Mon, 17 Aug 2026 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Vendors & Products Apple
Apple ios And Ipados
Apple macos

Mon, 17 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
Description A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References

Subscriptions

Apple Ios And Ipados Ipados Iphone Os Macos Safari
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-08-18T17:59:40.704Z

Reserved: 2026-07-20T18:11:03.397Z

Link: CVE-2026-64782

cve-icon Vulnrichment

Updated: 2026-08-18T13:00:45.162Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-17T22:17:23.180

Modified: 2026-08-18T19:58:41.380

Link: CVE-2026-64782

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-17T21:31:21Z

Links: CVE-2026-64782 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-27T01:45:04Z

Weaknesses
  • CWE-362

    Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

  • CWE-667

    Improper Locking