CVE-2026-64782Network attack vector

Browser crash via inadequate WebKit locking

Published Aug 17, 2026 · Updated Aug 18, 2026

Memory corruption in WebKit in Apple products allows attackers to crash Safari by processing maliciously crafted web content. A WebKit concurrency flaw accesses memory without adequate locking, allowing concurrent operations to corrupt process memory. Successful exploitation requires interaction with crafted web content and terminates Safari, with no reported data exposure or code execution.

CVSS severity3.1
Low
EPSS probability0.35%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in WebKit in Apple products allows attackers to crash Safari by processing maliciously crafted web content. A WebKit concurrency flaw accesses memory without adequate locking, allowing concurrent operations to corrupt process memory. Successful exploitation requires interaction with crafted web content and terminates Safari, with no reported data exposure or code execution.

The record

CVE
CVE-2026-64782
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-362, T1499.004, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <18.7.10
  2. Affected versionversion=0 <26.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18.7.10; version=0 <26.6.1
Apple · Safariversion=0 <26.6.1
Apple · macOSversion=0 <26.6.2

Published CVSS scores

3.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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