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CVE-2026-64754

MEDIUM
5.5
CVSS Score
Published: July 27, 2026 at 08:12 PM UTC
Updated: July 29, 2026 at 08:00 PM UTC
6 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing a maliciously crafted file may lead to a denial-of-service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
95%
v < 26.6
Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement
iPhone OS· Apple
95%
v < 26.6
Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 14.8.8v < 15.7.8v < 26.614.0 ≤ v < 14.8.815.0 ≤ v < 15.7.826.0 ≤ v < 26.6
Affected range stops below 14.8.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.7.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement
tvOS· Apple
95%
v < 26.6
Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement
visionOS· Apple
95%
v < 26.6
Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement
watchOS· Apple
95%
v < 26.6
Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (7)

Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128066
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128067
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128068
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128069
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128070
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128071
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/128072

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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