CVE-2026-65334Network attack vector

Browser crash via maliciously crafted WebKit content

Published Aug 17, 2026 · Updated Aug 18, 2026

Memory corruption in WebKit in Safari before 26.6.1 allows remote attackers to crash the browser via maliciously crafted web content. Apple has disclosed only that WebKit mishandles internal state during content processing, not the affected function or invalid memory operation. Exploitation requires a user to process attacker-controlled web content, and the documented consequence is an unexpected Safari crash rather than data access or code execution.

CVSS severity4.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in WebKit in Safari before 26.6.1 allows remote attackers to crash the browser via maliciously crafted web content. Apple has disclosed only that WebKit mishandles internal state during content processing, not the affected function or invalid memory operation. Exploitation requires a user to process attacker-controlled web content, and the documented consequence is an unexpected Safari crash rather than data access or code execution.

The record

CVE
CVE-2026-65334
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-119, CWE-787, 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

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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

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
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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