Buffer Overflow Vulnerability in Apple's Safari and iOS Devices
CVE-2025-43501

4.3MEDIUM

Key Information:

Vendor

Apple

Vendor
CVE Published:
17 December 2025

What is CVE-2025-43501?

CVE-2025-43501 is a buffer overflow vulnerability in Apple's Safari browser and various iOS devices, including iPhone and iPad. A buffer overflow occurs when a program writes more data to a buffer than it can hold, which can lead to unexpected behavior, including crashes or the execution of arbitrary code. This particular vulnerability affects the handling of maliciously crafted web content, which could trigger an unexpected process crash, negatively impacting the user experience and potentially exposing sensitive information. Companies relying on iOS devices for communication and productivity may face disruptions and loss of data integrity, enhancing the risk of operational downtime.

Potential Impact of CVE-2025-43501

  1. System Crashes: The vulnerability can lead to unexpected process crashes when malicious content is processed, resulting in reduced availability and hindering productivity for users relying on Safari and iOS devices for their work.

  2. Operational Disruptions: Organizations may experience interruptions in their services, impacting workflows and communication, especially if the devices in use are essential for business operations.

  3. Data Exposure Risks: While the immediate effect is a crash, the vulnerability could potentially allow adversaries to execute further malicious actions once the user interacts with compromised web content, risking the exposure of sensitive information and increasing the likelihood of future attacks.

Affected Version(s)

iOS and iPadOS < 18.7

iOS and iPadOS < 26.2

macOS < 26.2

References

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-43501 : Buffer Overflow Vulnerability in Apple's Safari and iOS Devices