CVE-2025-24201Known exploitationNetwork attack vector

Sandbox escape via WebKit out-of-bounds write

Published Mar 11, 2025 · Updated Apr 2, 2026

An out-of-bounds write in WebKit in Apple platforms allows remote attackers to escape the Web Content sandbox via crafted web content. Apple identifies WebKit bug 285858 but has not disclosed the affected function, buffer, or unchecked operation that permits the write. Processing attacker-controlled web content is required, and successful exploitation crosses the renderer sandbox without establishing broader system compromise.

CVSS severityUnavailable
Unscored
EPSS probability3.80%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in WebKit in Apple platforms allows remote attackers to escape the Web Content sandbox via crafted web content. Apple identifies WebKit bug 285858 but has not disclosed the affected function, buffer, or unchecked operation that permits the write. Processing attacker-controlled web content is required, and successful exploitation crosses the renderer sandbox without establishing broader system compromise.

The record

CVE
CVE-2025-24201
Published
Mar 11, 2025
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-787, T1211, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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 <15.8.4
  2. Affected versionversion=0 <16.7.11
  3. Affected versionversion=0 <18.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <15.8.4; version=0 <16.7.11; version=0 <18.3.2
Apple · visionOSversion=0 <2.3.2
Apple · Safariversion=0 <18.3.1
Apple · macOSversion=0 <15.3.2
Apple · iPadOSversion=0 <17.7.6
Apple · watchOSversion=0 <11.4

Published CVSS scores

No CVSS assessment is available in this record.

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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1211Exploitation for Defense Evasion
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.

Reported exploitation

Technologies

Your stack

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Your stack

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