CVE-2026-28940

Apple macOS USD File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5. Processing a maliciously crafted image may corrupt process memory.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple macOS. Interaction with the USD library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the USD library. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Michael DePlante (@izobashi) of TrendAI Zero Day Initiative

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2026-03-03 CVE Reserved
2026-05-11 CVE Published
2026-05-13 CVE Updated
2026-05-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/127110	2026-05-12
https://support.apple.com/en-us/127111	2026-05-12
https://support.apple.com/en-us/127115	2026-05-12
https://support.apple.com/en-us/127116	2026-05-12
https://support.apple.com/en-us/127118	2026-05-12
https://support.apple.com/en-us/127120	2026-05-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				< 18.7.9 Search vendor "Apple" for product "Ipados" and version " < 18.7.9"		-		Affected
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				>= 26.0 < 26.5 Search vendor "Apple" for product "Ipados" and version " >= 26.0 < 26.5"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 18.7.9 Search vendor "Apple" for product "Iphone Os" and version " < 18.7.9"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				>= 26.0 < 26.5 Search vendor "Apple" for product "Iphone Os" and version " >= 26.0 < 26.5"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 15.0 < 15.7.7 Search vendor "Apple" for product "Macos" and version " >= 15.0 < 15.7.7"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 26.0 < 26.5 Search vendor "Apple" for product "Macos" and version " >= 26.0 < 26.5"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 26.5 Search vendor "Apple" for product "Tvos" and version " < 26.5"		-		Affected
Apple Search vendor "Apple"		Visionos Search vendor "Apple" for product "Visionos"				< 26.5 Search vendor "Apple" for product "Visionos" and version " < 26.5"		-		Affected