Apple Multiple Products Buffer Overflow Vulnerability
The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory corruption.
What happened
The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory corruption.
CISA lists it as exploited, added 20 Mar 2026.
Does it affect you
Names Apple macOS, Red Hat Enterprise Linux. 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 15.6
- rhel
- Red Hat Enterprise Linux: exactly 6.0
The record
- NVD status
- Analyzed
- Published
- 30 Jul 2025, last modified 21 Sep 2026 (NVD)
- Severity
- CVSS 3.1 base score 8.8, High — computed here from the vector; NVD states 8.8.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer, CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 20 Mar 2026; federal remediation due 03 Apr 2026. CISA entry
- Exploit probability
- EPSS 1.7%, 76th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Apple · Multiple Products (CISA)
References on the NVD record
- support.apple.com/en-us/124147Release NotesVendor Advisory
- support.apple.com/en-us/124149Release NotesVendor Advisory
- support.apple.com/en-us/124152Release NotesVendor Advisory
- support.apple.com/en-us/124153Release NotesVendor Advisory
- support.apple.com/en-us/124154Release NotesVendor Advisory
- support.apple.com/en-us/124155Release NotesVendor Advisory
- seclists.org/fulldisclosure/2025/Aug/0Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Jul/30Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Jul/32Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Jul/36Mailing ListThird Party Advisory
- access.redhat.com/errata/RHSA-2025:17643Third Party Advisory
- access.redhat.com/errata/RHSA-2025:17741Third Party Advisory
- access.redhat.com/errata/RHSA-2025:17743Third Party Advisory
- access.redhat.com/errata/RHSA-2025:17802Third Party Advisory
- access.redhat.com/errata/RHSA-2025:17807Third Party Advisory
- access.redhat.com/errata/RHSA-2025:18097Third Party Advisory
- access.redhat.com/errata/RHSA-2025:19109Third Party Advisory
- access.redhat.com/errata/RHSA-2025:19157Third Party Advisory
- access.redhat.com/errata/RHSA-2025:19165Third Party Advisory
- access.redhat.com/errata/RHSA-2025:19352Third Party Advisory
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.