CVE-2025-43255

Out‑of‑Bounds Read Leading to Unexpected System Termination in macOS

Published Aug 29, 2025 CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7. An app may be able to cause unexpected system termination.

Analysis

Technical impact

An out‑of‑bounds read due to missing bounds checking can be triggered by a local application, causing unexpected system termination. The vulnerability does not grant code execution or data disclosure, but can lead to a denial of service by crashing the operating system or its services.

Affected Systems

Apple macOS is affected; systems running versions prior to macOS Sequoia 15.6, macOS Sonoma 14.7.7, or macOS Ventura 13.7.7 are vulnerable. The fix is available in these and later releases.

Risk and Exploitability

The CVSS score of 3.3 reflects low severity, and the EPSS suggests a very low exploitation probability (less than 1%). The vulnerability is not listed in CISA KEV, and the attack vector is inferred to be local, requiring an application capable of causing the out‑of‑bounds read to be executed. There is no evidence of remote exploitation or privilege escalation.

Affected Products

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

macOS

affected

Version	Status	Constraints
`0`	affected	< 13.7.7
`0`	affected	< 14.7.7
`0`	affected	< 15.6

Configuration 1 [-]

OR	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:macos::::::::

No data.

Vendor	Product	Versions
Apple	Macos	—
Apple	Macos Sequoia	—
Apple	Macos Sonoma	—
Apple	Macos Ventura	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade to macOS Sequoia 15.6 or newer
Upgrade to macOS Sonoma 14.7.7 or newer
Upgrade to macOS Ventura 13.7.7 or newer

Generated by OpenCVE AI on April 28, 2026 at 10:52 UTC.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-28002	An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sonoma 14.7.7, macOS Sequoia 15.6, macOS Ventura 13.7.7. An app may be able to cause unexpected system termination.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.211% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
http://seclists.org/fulldisclosure/2025/Jul/32
http://seclists.org/fulldisclosure/2025/Jul/33
http://seclists.org/fulldisclosure/2025/Jul/34
https://support.apple.com/en-us/124149
https://support.apple.com/en-us/124150
https://support.apple.com/en-us/124151

History

Apr 28, 2026 11:15 AM Title updated View changes

Type	Values Removed	Values Added
Title		Out‑of‑Bounds Read Leading to Unexpected System Termination in macOS

Apr 2, 2026 8:30 PM Description updated View changes

Type	Values Removed	Values Added
Description	An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sonoma 14.7.7, macOS Sequoia 15.6, macOS Ventura 13.7.7. An app may be able to cause unexpected system termination.	An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7. An app may be able to cause unexpected system termination.

Nov 3, 2025 8:30 PM Added references View changes

Type	Values Removed	Values Added
References		http://seclists.org/fulldisclosure/2025/Jul/32 http://seclists.org/fulldisclosure/2025/Jul/33 http://seclists.org/fulldisclosure/2025/Jul/34

Sep 2, 2025 3:30 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Apple macos Sequoia Apple macos Sonoma Apple macos Ventura
Vendors & Products		Apple macos Sequoia Apple macos Sonoma Apple macos Ventura

Sep 2, 2025 1:00 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Apple Apple macos
CPEs		cpe:2.3:o:apple:macos::::::::
Vendors & Products		Apple Apple macos

Aug 29, 2025 2:15 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-125
Metrics		cvssV3_1 `{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Aug 29, 2025 12:45 AM Description updated. Added references View changes

Type	Values Removed	Values Added
Description		An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sonoma 14.7.7, macOS Sequoia 15.6, macOS Ventura 13.7.7. An app may be able to cause unexpected system termination.
References		https://support.apple.com/en-us/124149 https://support.apple.com/en-us/124150 https://support.apple.com/en-us/124151