CVE-2026-28858
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user may be able to cause...
- Published
- Mar 25, 2026
- Updated
- Apr 2, 2026
- Assigning CNA
- apple
- Evidence observed
- Aug 25, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 43.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user may be able to cause unexpected system termination or corrupt kernel memory.
Sources
1- CVE-2026-28858Research
Technical analysis of CVE-2026-28858, a critical buffer overflow in Apple iOS/iPadOS kernel, including exploit flow, mitigation, and defensive coding examples.
Responsible use
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