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Full vulnerability report · 2025
CVE-2025-24201High confidence

Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability

Apple · Multiple Products

10.0CriticalCVSS 3.1
Recommended action
Protect now

CISA confirms exploitation in the wild and lists 2025-04-03 as the remediation due date.

Fix not verified
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

2 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archiveqtwebkit-opensource-srcUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivewebkit2gtkVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.2.48.0-0ubuntu0.24.04.1Canonical record ↗Source updated 9 Sept 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2025-6302

CISA KEV mirrored by ENISA

An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in Safari 18.3.1, iOS 15.8.4 and iPadOS 15.8.4, iOS 16.7.11 and iPadOS 16.7.11, iOS 18.3.2 and iPadOS 18.3.2, iPadOS 17.7.6, macOS Sequoia 15.3.2, visionOS 2.3.2, watchOS 11.4. 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.).

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 13 Mar 2025. Evidence sources: cisa_kev.
ENISA score
10.0 · CVSS 3.1
Advisory evidence
24 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_suse · SUSE-SU-2025:1023-1Security update for webkit2gtk3
  • csaf_suse · SUSE-SU-2025:0975-1Security update for webkit2gtk3
  • csaf_redhat · RHSA-2025:2863Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_suse · SUSE-SU-2025:02777-1Security update for webkit2gtk3
  • csaf_suse · SUSE-SU-2025:0974-1Security update for webkit2gtk3
  • csaf_redhat · RHSA-2025:3000Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_redhat · RHSA-2025:2864Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_suse · SUSE-SU-2025:1149-1Security update for webkit2gtk3
  • csaf_suse · SUSE-SU-2025:02766-1Security update for webkit2gtk3
  • csaf_redhat · RHSA-2025:2997Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_ncscnl · NCSC-2025-0103Kwetsbaarheden verholpen in Apple iOS en iPadOS
  • csaf_redhat · RHSA-2025:3001Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_suse · SUSE-SU-2025:02765-1Security update for webkit2gtk3
  • csaf_suse · SUSE-SU-2025:0993-1Security update for webkit2gtk3
  • csaf_ncscnl · NCSC-2025-0086Kwetsbaarheid verholpen in Apple iOS, iPadOS, macOS Sequoia, visionOS en Safari
  • csaf_suse · SUSE-SU-2025:02973-1Security update for webkit2gtk3
  • csaf_redhat · RHSA-2025:3002Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_redhat · RHSA-2025:3034Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_redhat · RHSA-2025:10364Red Hat Security Advisory: webkitgtk4 security update
  • csaf_redhat · RHSA-2025:3005Red Hat Security Advisory: webkit2gtk3 security update
  • csaf_redhat · RHSA-2025:2998Red Hat Security Advisory: webkit2gtk3 security update
Recommended actionProtect now

CISA confirms exploitation in the wild and lists 2025-04-03 as the remediation due date.

Fix not verified
01

What, why and how

Apple iOS, iPadOS, macOS, and other Apple products contain an out-of-bounds write vulnerability in WebKit that may allow maliciously crafted web content to break out of Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

What

Apple iOS, iPadOS, macOS, and other Apple products contain an out-of-bounds write vulnerability in WebKit that may allow maliciously crafted web content to break out of Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Apple iOS, iPadOS, macOS, and other Apple products contain an out-of-bounds write vulnerability in WebKit that may allow maliciously crafted web content to break out of Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2025-03-13.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-787CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2025-6302Known-exploited evidence recorded

An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in Safari 18.3.1, iOS 15.8.4 and iPadOS 15.8.4, iOS 16.7.11 and iPadOS 16.7.11, iOS 18.3.2 and iPadOS 18.3.2, iPadOS 17.7.6, macOS Sequoia 15.3.2, visionOS 2.3.2, watchOS 11.4. 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.).

Official EUVD record
BSI · German · WID-SEC-W-2025-0542Webkit/Apple : Schwachstelle ermöglicht Umgehung von Sicherheitsmechanismen

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in WebkitGTK und in Apple iOS, Apple iPadOS, Apple macOS und Apple Safari ausnutzen, um Sicherheitsmechanismen zu umgehen.

Official advisory
BSI · German · WID-SEC-W-2025-0515Google Chrome und Microsoft Edge: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Google Chrome und Microsoft Edge ausnutzen, um einen Denial-of-Service-Zustand auszulösen, beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen preiszugeben und Sicherheitsmaßnahmen zu umgehen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0258Multiples vulnérabilités dans les produits Apple

iPadOS versions antérieures à 17.7.6 iPadOS versions antérieures à 18.4 macOS Sequoia versions antérieures à 15.4 macOS Sonoma versions antérieures à 14.7.5 macOS Ventura versions antérieures à 13.7.5 Safari versions antérieures à 18.4 tvOS versions antérieures à 18.4 visionOS versions antérieures à 2.4 Xcode versions antérieures à 16.3 Résumé De multiples vulnérabilités ont été découvertes dans les produits Apple. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, une élévation de privilèges et une atteinte à la confidentialité des données. Apple indique que les vulnérabilités CVE-2025-24200 et CVE-2025-24201 sont activement exploitées. Solutions Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Apple 122345 du 31 mars 2025 https://support.apple.com/en-us/122345 Bulletin de sécurité Apple 122346 du 31 mars 2025 https://support.apple.com/en-us/122346 Bulletin de sécurité Apple 122371 du 31 mars 2025 https://support.apple.com/en-us/122371 Bulletin de sécurité Apple 122372 du 31 mars 2025 https://support.apple.com/en-us/122372 Bulletin de sécurité Apple 122373 du 31 mars 2025 https://support.apple.com/en-us/122373 Bulletin de sécurité Apple 122374 du 31 mar

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0203Multiples vulnérabilités dans Microsoft Edge

De multiples vulnérabilités ont été découvertes dans Microsoft Edge. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur. Microsoft indique que la vulnérabilité CVE-2025-24201 est activement exploitée.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0199Vulnérabilité dans les produits Apple

Une vulnérabilité a été découverte dans les produits Apple. Elle permet à un attaquant de provoquer un contournement de la politique de sécurité. Apple indique que la vulnérabilité CVE-2025-24201 est activement exploitée.

Official advisory
NCSC-NL · Dutch · NCSC-2025-0086Kwetsbaarheid verholpen in Apple iOS, iPadOS, macOS Sequoia, visionOS en Safari

De kwetsbaarheid met kenmerk CVE-2025-24201 ligt in de manier waarop Apple zijn besturingssystemen beheert. Dit betreft onder andere een out-of-bounds write probleem dat ongeautoriseerde acties kan toestaan.

Official advisory
NCSC-NL · Dutch · NCSC-2025-0103Kwetsbaarheden verholpen in Apple iOS en iPadOS

De kwetsbaarheden omvatten onder andere geheugenbeheerproblemen, ongeautoriseerde toegang tot gevoelige gebruikersdata, en de mogelijkheid voor applicaties om hun sandbox-omgevingen te ontsnappen. Deze kwetsbaarheden konden leiden tot ongeautoriseerde toegang, gegevenswijzigingen, of zelfs Denial-of-Service. Voor succesvol misbruik moet de kwaadwillende het slachtoffer misleiden een malafide app te installeren of link te volgen.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
< 18.3.1; < 15.8.4; < 16.7.11; < 18.3.2; < 17.7.6; < 15.3.2; < 2.3.2; < 11.4
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 11 Mar 2025 · Last source change 2 Apr 2026, 18:10 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2025-6302
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
ENISA EUVD · EUVD-2025-6302↗CISA KEV record↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2025-24201 · cve.blacktree.nl