iOS/macOS tvOS Bypass Bounds Check Crash - Fixed in 18.7.9, 26.5
CVE-2026-28977 Published on May 11, 2026
The issue was addressed with improved bounds checks. 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. Processing a maliciously crafted file may lead to unexpected app termination.
Vulnerability Analysis
CVE-2026-28977 can be exploited with local system 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 Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2026-28977 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2026-28977
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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.
Exploit Probability
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.