CVE-2025-24264Network attack vector

Safari crash via undisclosed WebKit memory handling

Published Mar 31, 2025 · Updated Jul 22, 2026

Memory handling flaw in WebKit in Safari before 18.4 allows remote attackers to crash Safari by processing malicious web content. Apple identifies WebKit as the affected component but has not disclosed the faulty function or the memory operation performed on untrusted content. The effect is limited to an unexpected browser crash; the same defect affects iOS and iPadOS before 18.4, iPadOS before 17.7.6, macOS before 15.4, tvOS before 18.4, visionOS before 2.4, and watchOS before 11.4.

CVSS severity9.8
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory handling flaw in WebKit in Safari before 18.4 allows remote attackers to crash Safari by processing malicious web content. Apple identifies WebKit as the affected component but has not disclosed the faulty function or the memory operation performed on untrusted content. The effect is limited to an unexpected browser crash; the same defect affects iOS and iPadOS before 18.4, iPadOS before 17.7.6, macOS before 15.4, tvOS before 18.4, visionOS before 2.4, and watchOS before 11.4.

The record

CVE
CVE-2025-24264
Published
Mar 31, 2025
Updated
Jul 22, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-119, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 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 <18.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18.4
Apple · visionOSversion=0 <2.4
Apple · Safariversion=0 <18.4
Apple · tvOSversion=0 <18.4
Apple · macOSversion=0 <15.4
Apple · iPadOSversion=0 <17.7.6
Apple · watchOSversion=0 <11.4

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8SUSECVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
T1499Endpoint Denial of Service

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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