CVE-2026-65351Network attack vector

Browser crash via WebKit state mismanagement

Published Aug 17, 2026 · Updated Aug 18, 2026

State-management flaw in WebKit in Apple Safari before 26.6.1 and macOS before 26.6.2 allows remote attackers to crash Safari via crafted web content. Apple attributes the issue to WebKit state handling and has not disclosed a deeper code-level locus beyond improper handling of malicious page state during content processing. Exploitation requires a user to open attacker-supplied web content, and the published impact is limited to an unexpected Safari crash with no public evidence of code execution, data access, or broader system compromise.

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

State-management flaw in WebKit in Apple Safari before 26.6.1 and macOS before 26.6.2 allows remote attackers to crash Safari via crafted web content. Apple attributes the issue to WebKit state handling and has not disclosed a deeper code-level locus beyond improper handling of malicious page state during content processing. Exploitation requires a user to open attacker-supplied web content, and the published impact is limited to an unexpected Safari crash with no public evidence of code execution, data access, or broader system compromise.

The record

CVE
CVE-2026-65351
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Apple
Product
Safari
Classifications
CWE-703, T1499
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 <26.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · Safariversion=0 <26.6.1
Apple · macOSversion=0 <26.6.2

Published CVSS scores

4.3NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-703Improper Check or Handling of Exceptional Conditions
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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