CVE-2025-43478

Use-After-Free Leading to Unexpected System Termination in macOS

Published Nov 4, 2025 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1. An app may be able to cause unexpected system termination.

Analysis

Technical impact

A use‑after‑free flaw in macOS memory management can allow a malicious application to trigger a crash, causing the operating system to terminate unexpectedly. The vulnerability is a classic example of an improper free of memory that is later accessed, leading to instability rather than code execution. The impact is a denial‑of‑service scenario where the entire system may become unavailable until rebooted or updated.

Affected Systems

The vulnerability affects Apple macOS versions older than Sequoia 15.7.2, Sonoma 14.8.2, and Tahoe 26.1. Updating to any of these releases incorporates the corrected memory handling and eliminates the risk.

Risk and Exploitability

The CVSS score of 5.5 indicates a moderate severity. EPSS is less than 1 %, suggesting that exploitation is unlikely but not impossible. The vulnerability is not currently listed in CISA’s KEV catalog, and it is inferred that exploitation would likely require local or privileged contexts rather than remote exploitation.

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	< 14.8.2
`0`	affected	< 15.7.2
`0`	affected	< 26.1

Configuration 1 [-]

OR	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	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Install the latest macOS updates (Sequoia 15.7.2, Sonoma 14.8.2, or Tahoe 26.1) to patch the memory‑management flaw.
Configure the system to automatically download and install security updates to ensure timely protection against similar issues.
Keep all third‑party applications, especially those that heavily use system memory, up to date to reduce the likelihood of triggering the use‑after‑free condition.

Generated by OpenCVE AI on April 27, 2026 at 23:26 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.181% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://support.apple.com/en-us/125634
https://support.apple.com/en-us/125635
https://support.apple.com/en-us/125636

History

Apr 27, 2026 11:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Use-After-Free Leading to Unexpected System Termination in macOS

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

Type	Values Removed	Values Added
Description	A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.2, macOS Tahoe 26.1, macOS Sonoma 14.8.2. An app may be able to cause unexpected system termination.	A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1. An app may be able to cause unexpected system termination.

Dec 17, 2025 9:00 PM Description updated. Added references View changes

Type	Values Removed	Values Added
Description	A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sonoma 14.8.2, macOS Sequoia 15.7.2. An app may be able to cause unexpected system termination.	A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.2, macOS Tahoe 26.1, macOS Sonoma 14.8.2. An app may be able to cause unexpected system termination.
References		https://support.apple.com/en-us/125634

Nov 4, 2025 4:45 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
Vendors & Products		Apple macos Sequoia Apple macos Sonoma

Nov 4, 2025 4:30 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

Nov 4, 2025 2:15 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-416
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Nov 4, 2025 1:45 AM Description updated. Added references View changes

Type	Values Removed	Values Added
Description		A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sonoma 14.8.2, macOS Sequoia 15.7.2. An app may be able to cause unexpected system termination.
References		https://support.apple.com/en-us/125635 https://support.apple.com/en-us/125636