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Apple iOS and iPadOS Buffer Overflow Vulnerability in Baseband and Telephony Components Allowing Denial-of-Service

Vulnerability

A buffer overflow vulnerability has been identified in the baseband and telephony components of Apple iOS 26.4 and iPadOS 26.4. This vulnerability allows a remote attacker to cause a denial-of-service by exploiting the buffer overflow, leading to unexpected termination of the affected process.

Impact

Exploitation of this vulnerability causes a denial-of-service by terminating the process handling the call, according to Apple.

Remediation

Users can update to iOS 26.4 or iPadOS 26.4 to address this vulnerability.

Added: Mar 25, 2026, 1:40 AM
Updated: Mar 25, 2026, 1:40 AM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
2.5
exploitability
4.3
remediation
7.7
relevance
4.7
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.