Apple iOS/macOS Buffer Overflow Causing App Termination (fixed in 18.7.9, 15.7.7)
CVE-2026-28846 Published on May 11, 2026
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. A remote attacker may be able to cause unexpected app termination.
Vulnerability Analysis
CVE-2026-28846 is exploitable with network access, and does not require authorization privileges or user interaction. 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 high impact on availability.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-28846 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-28846
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Affected Versions
Apple iOS and iPadOS:- Before 18.7.9 is affected.
- Before 26.5 is affected.
- Before 14.8.7 is affected.
- Before 15.7.7 is affected.
- Before 26.5 is affected.
- Before 26.5 is affected.
- Before 26.5 is affected.
- Before 26.5 is affected.