An out-of-bounds write issue was addressed with improved bounds checking
Published Sep 28, 2026 ·Due Oct 2, 2026
8.8
HIGHCVSS 3.1
EPSS 1.24%
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. 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 27.
Affected products
-
- Version 0StatusaffectedConstraints<26.7.1
- Version
-
- Version 0StatusaffectedConstraints<15.8.1
- Version 0StatusaffectedConstraints<26.7.1
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apple | iOS and iPadOS | n/a |
| |||||||||
| Apple | macOS | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
Date Added
Sep 29, 2026
Patch Due
Oct 2, 2026
Required Action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Sep 30, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
Percentile over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
References (4)
Change history (9)
- CISA ADP
- SSVC exploitation changed from none to
active none → active
- SSVC exploitation changed from none to
active
- CISA ADP
- SSVC exploitation changed from active to
none active → none
- SSVC exploitation changed from active to
none
- CISA ADP
- SSVC exploitation changed from none to
active none → active
- SSVC exploitation changed from none to
active
- CISA ADP
- SSVC exploitation changed from active to
none active → none
- SSVC exploitation changed from active to
none
- CISA ADP
- SSVC exploitation changed from none to
active none → active
- SSVC exploitation changed from none to
active
- CISA ADP
- SSVC exploitation changed from active to
none active → none
- SSVC exploitation changed from active to
none
- CISA ADP
- SSVC exploitation changed from none to
active none → active
- SSVC exploitation changed from none to
active
- CISA ADP
- SSVC exploitation changed from active to
none active → none
- SSVC exploitation changed from active to
none
- CISA ADP
- SSVC exploitation changed from none to
active none → active
- SSVC exploitation changed from none to
active