OOB Write in AVFoundation (fixed in iOS 18.7, macOS 15.7)
CVE-2025-43349 Published on September 15, 2025

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in tvOS 26, watchOS 26, macOS Sonoma 14.8, iOS 26 and iPadOS 26, macOS Sequoia 15.7, visionOS 26, iOS 18.7 and iPadOS 18.7. Processing a maliciously crafted video file may lead to unexpected app termination.

NVD

Vulnerability Analysis

CVE-2025-43349 can be exploited with local system access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.

Attack Vector:

LOCAL

Attack Complexity:

LOW

Privileges Required:

LOW

User Interaction:

REQUIRED

Scope:

UNCHANGED

Confidentiality Impact:

NONE

Integrity Impact:

NONE

Availability Impact:

LOW

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2025-43349 has been classified to as a Memory Corruption vulnerability or weakness.

Products Associated with CVE-2025-43349

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Apple macOS

Apple iOS

Apple tvOS

Apple visionOS

Apple watchOS

Apple iPadOS

Apple Macos Sonoma

Affected Versions

Apple macOS:

Version unspecified and below 14.8 is affected.

Apple iOS and iPadOS:

Version unspecified and below 26 is affected.

Apple iOS and iPadOS:

Version unspecified and below 18.7 is affected.

Apple tvOS:

Version unspecified and below 26 is affected.

Apple visionOS:

Version unspecified and below 26 is affected.

Apple watchOS:

Version unspecified and below 26 is affected.

Apple macOS:

Version unspecified and below 15.7 is affected.

Exploit Probability

EPSS

0.01%

Percentile

2.42%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.