CVE-2025-43520mediumunder attackCWE-120

CVE-2025-43520: medium-severity vulnerability in Apple macOS

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63Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 5.5epss 0.4%
from disclosure to weapon326 days
Published on NVDDec 12
1st PoC+326d
CISA KEV+98d
victimsOct 27
Appeared in 1 incident(s) we investigated
Sites e usuários de iPhone (campanha DeadTag)
Action required by CISAfederal deadline: 2026-04-03

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

In short

A memory handling flaw in Apple operating systems could allow a malicious app to crash your device or overwrite critical system memory. This is a local attack that requires a malicious app to be installed on your device.

Technical detail

A buffer overflow or improper memory management vulnerability (CWE-120) in iOS, macOS, tvOS, visionOS, and watchOS allows a locally installed malicious application to cause denial of service through unexpected system termination or to achieve kernel memory corruption. Exploitation requires application execution privileges on the targeted device.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Apple · iOS and iPadOSApple · macOSApple · tvOSApple · visionOSApple · watchOS
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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