Visionos CVE-2025-24201

CRITICAL

Out-of-bounds Write (CWE-787)

2025-03-11 product-security@apple.com

Buffer Overflow Memory Corruption Apple Debian Debian Linux Ipados Iphone Os Visionos Watchos

10.0

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-787 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, write limits MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 10.0 (Critical). KEV-listed — exploited in extremely sophisticated targeted attacks. Sandbox escape elevates impact beyond typical browser RCE. Affects all Apple platforms (billions of devices). Apple acknowledged active exploitation before patch. Supplementary fix suggests ongoing attacker interest.
Exploit ScenarioDerived	A target visits a compromised or attacker-controlled website on Safari or any iOS/macOS app using WebKit for rendering. The malicious web content triggers the out-of-bounds write in the WebKit renderer, then leverages the vulnerability to escape the Web Content sandbox. The attacker achieves code execution outside the sandbox with full process privileges, enabling installation of spyware, data exfiltration, or persistent device compromise. This attack has been observed in sophisticated targeted surveillance operations.

Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.

Exploited in the wild (CISA KEV) Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

A critical out-of-bounds write in WebKit's rendering engine allows maliciously crafted web content to escape the Web Content sandbox, achieving native code execution on Apple devices. Rated CVSS 10.0 and KEV-listed, CVE-2025-24201 is a supplementary fix for a previously patched vulnerability that was being actively exploited in extremely sophisticated targeted attacks. Affects all Apple platforms: iOS, iPadOS, macOS, Safari, visionOS, and watchOS.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 19:52 CVSS 10.0

WebKit contains an out-of-bounds write vulnerability (CWE-787) that allows maliciously crafted web content to break out of the Web Content sandbox, enabling arbitrary code execution outside the sandboxed rendering process on all Apple platforms.

RemediationAI

Update all Apple devices immediately. iOS/iPadOS 18.3.2+, macOS Sequoia 15.3.2+, Safari 18.3.1+. This is a sandbox escape with confirmed in-the-wild exploitation — treat as emergency priority. Organizations should push MDM updates and verify compliance.

Affects your stack

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Technical ContextAI · show details

This is a sandbox escape vulnerability in WebKit's rendering pipeline. Unlike typical WebKit memory corruption bugs that execute code within the sandboxed Web Content process, this vulnerability breaks the sandbox boundary, allowing attacker code to run with the privileges of the parent process. Apple described this as a 'supplementary fix' for a previously addressed issue, suggesting the original patch was incomplete. The sandbox escape makes this significantly more dangerous than standard browser RCE vulnerabilities.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 10.0 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

SUSE 7.1 HIGH

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Red Hat 7.5 HIGH

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

3

Added to CISA KEV

Apr 03, 2026 - 11:45 cisa

CISA KEV

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

CVE Published

Mar 11, 2025 - 18:15 nvd

CRITICAL 10.0

DescriptionCVE.org

An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in visionOS 2.3.2, iOS 18.3.2 and iPadOS 18.3.2, macOS Sequoia 15.3.2, Safari 18.3.1, watchOS 11.4, iPadOS 17.7.6, iOS 16.7.11 and iPadOS 16.7.11, iOS 15.8.4 and iPadOS 15.8.4. Maliciously crafted web content may be able to break out of Web Content sandbox. This is a supplementary fix for an attack that was blocked in iOS 17.2. (Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 17.2.).

Executive ViewAI

Why It Matters

Organizations using An out-of-bounds write face critical risk from CVE-2025-24201, a out-of-bounds write vulnerability rated CVSS 10.0. Exploitation could allow attackers to corrupt memory, crash the application, or potentially execute arbitrary code. This vulnerability is actively exploited in the wild (KEV-listed) and requires immediate remediation. Immediate patching is required per CISA KEV mandate.

Business Impact: Severe

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

EPSS Score

0.1%

Top 75% exploitable

Data Quality

6 sources

Confidence: High

CISA KEV

EPSS Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV Yes

Public POC No

EPSS 0.1%

Patch available Yes

Active threat Yes

Deciding rule

In CISA KEV with patch available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Immediate

Exploitation· derived

Active

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

Very High

Priority Score

100

Low Medium High Critical

KEV: +50

EPSS: 0

CVSS: +50

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Affected Products (CPE)CVE.org

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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WebKit memory corruption in Safari 18.6 and multiple Apple platforms allows remote code execution when processing malici

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Apple kernel memory corruption in multiple operating systems allows a malicious application to cause unexpected system t

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Arbitrary code execution in Apple Safari, iOS/iPadOS, macOS Sequoia, and visionOS occurs when processing maliciously cra

CVE-2025-14174 HIGH Act Now

Out-of-bounds write (CWE-787) in QtWebEngine before 6.10.1-r2 on Alpine Linux, and in other Chromium-based engines such

CVE-2025-6558 HIGH Act Now

Remote code execution in Google Chrome's ANGLE graphics layer allows attackers to compromise systems via crafted HTML pa

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WebKit arbitrary code execution via use-after-free memory corruption affects Safari 26.2, iOS/iPadOS 18.7.3 through 26.2

CVE-2024-44309 MEDIUM This Month

A cookie management issue was addressed with improved state management. Rated medium severity (CVSS 6.3), this vulnerabi

CVE-2025-43200 MEDIUM Act Now

A denial of service vulnerability in This (CVSS 4.2). Risk factors: actively exploited (KEV-listed).

CVE-2025-43359 CRITICAL Act Now POC

A logic issue was addressed with improved state management. Rated critical severity (CVSS 9.8), this vulnerability is re

CVE-2024-27815 HIGH Act Now

An out-of-bounds write issue was addressed with improved input validation. Rated high severity (CVSS 7.8), this vulnerab

CVE-2026-43723 HIGH This Week POC

Local privilege escalation in Apple operating systems allows a malicious app to gain root privileges. The vulnerability,

Same weakness CWE-787 – Out-of-bounds Write

View all

CVE-2015-3113 CRITICAL POC

CVE-2011-2462 CRITICAL POC

CVE-2012-1889 HIGH POC

CVE-2010-3333 HIGH POC

CVE-2014-1761 HIGH POC

CVE-2009-3129 HIGH POC

CVE-2021-1732 HIGH POC

CVE-2013-3346 CRITICAL POC

Same technique Buffer Overflow

View all

CVE-2017-7269 CRITICAL POC

CVE-2015-5119 CRITICAL POC

CVE-2020-0796 CRITICAL POC

CVE-2019-11043 CRITICAL POC

CVE-2009-0927 HIGH POC

Vendor StatusVendor

SUSE

Severity: High

Product	Status
SUSE Enterprise Storage 7.1	Fixed
SUSE Liberty Linux 8	Fixed
SUSE Liberty Linux 9	Fixed
SUSE Linux Enterprise Desktop 15 SP6 SUSE Linux Enterprise High Performance Computing 15 SP6 SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP6	Fixed
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7	Fixed

References

Advisories & patches

ADVISORY https://access.redhat.com/errata/RHSA-2025:10364 ADVISORY https://access.redhat.com/errata/RHSA-2025:2863 ADVISORY https://access.redhat.com/errata/RHSA-2025:2864 ADVISORY https://access.redhat.com/errata/RHSA-2025:2997 ADVISORY https://access.redhat.com/errata/RHSA-2025:2998 ADVISORY https://access.redhat.com/errata/RHSA-2025:3000 ADVISORY https://access.redhat.com/errata/RHSA-2025:3001 ADVISORY https://access.redhat.com/errata/RHSA-2025:3002 ADVISORY https://access.redhat.com/errata/RHSA-2025:3005 ADVISORY https://access.redhat.com/errata/RHSA-2025:3034 ADVISORY https://support.apple.com/en-us/122281 ADVISORY https://support.apple.com/en-us/122283 ADVISORY https://support.apple.com/en-us/122284 ADVISORY https://support.apple.com/en-us/122285 ADVISORY https://support.apple.com/en-us/122345 ADVISORY https://support.apple.com/en-us/122346 ADVISORY https://support.apple.com/en-us/122372 ADVISORY https://support.apple.com/en-us/122376 ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02765/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02766/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02777/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02973/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:0974/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:0975/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:0993/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:1023/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:1033/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:1149/ REF http://seclists.org/fulldisclosure/2025/Apr/16 REF http://seclists.org/fulldisclosure/2025/Apr/7 REF http://seclists.org/fulldisclosure/2025/Jun/19 REF http://seclists.org/fulldisclosure/2025/Mar/2 REF http://seclists.org/fulldisclosure/2025/Mar/3 REF http://seclists.org/fulldisclosure/2025/Mar/4 REF http://seclists.org/fulldisclosure/2025/Mar/5 REF http://seclists.org/fulldisclosure/2025/Oct/1 REF http://seclists.org/fulldisclosure/2025/Oct/31 REF https://github.com/JGoyd/Glass-Cage-iOS18-CVE-2025-24085-CVE-2025-24201 REF https://github.com/cisagov/vulnrichment/issues/194 REF https://lists.debian.org/debian-lts-announce/2025/06/msg00016.html REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24201

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