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CVE-2026-64772

CRITICAL
9.8
CVSS Score
Published: July 27, 2026 at 08:13 PM UTC
Updated: August 17, 2026 at 10:34 PM UTC
5 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity
CRITICAL9.8
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.

Affected

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

iPadOS· Apple
95%
v < 18.7.10v < 26.6
Affected range stops below 18.7.10, 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
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 < 15.7.8v < 26.615.0 ≤ v < 15.7.826.0 ≤ v < 26.6
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

Remediation

No guide yet

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

Patch and advisory references

References (6)

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/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
Source: cverecord
https://support.apple.com/en-us/148287

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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