Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
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 f
What happened
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.).
CISA lists it as exploited, added 13 Mar 2025.
Does it affect you
Names Apple macOS. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
cisa.gov
CISA’s notes for this entry:
Affected, as published to NVD
- macos
- Apple macOS: 15.0 up to the fix in 15.3.2
The record
- NVD status
- Analyzed
- Published
- 11 Mar 2025, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 10.0, Critical — computed here from the vector; NVD states 10.0.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness
- CWE-787 Out-of-bounds Write (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 13 Mar 2025; federal remediation due 03 Apr 2025. CISA entry
- Exploit probability
- EPSS 3.8%, 90th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Apple · Multiple Products (CISA)
References on the NVD record
- support.apple.com/en-us/122281Release NotesVendor Advisory
- support.apple.com/en-us/122283Release NotesVendor Advisory
- support.apple.com/en-us/122284Release NotesVendor Advisory
- support.apple.com/en-us/122285Release NotesVendor Advisory
- support.apple.com/en-us/122345Release NotesVendor Advisory
- support.apple.com/en-us/122346Release NotesVendor Advisory
- support.apple.com/en-us/122372Release NotesVendor Advisory
- support.apple.com/en-us/122376Release NotesVendor Advisory
- seclists.org/fulldisclosure/2025/Apr/16Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Apr/7Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Jun/19Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Mar/2Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Mar/3Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Mar/4Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Mar/5Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Oct/1Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Oct/31Mailing ListThird Party Advisory
- github.com/JGoyd/Glass-Cage-iOS18-CVE-2025-24085-CVE-2025-24201Third Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24201US Government Resource
- github.com/cisagov/vulnrichment/issues/194Issue Tracking
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.