CVE-2026-28858

A buffer overflow was addressed with improved bounds checking

Critical · published March 25, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
47.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00580 · 47.0th percentile
Published
2026-03-25T00:32Z
EPSS history
Timeline
  • 25 MAR 00:32Z
    A buffer overflow was addressed with improved bounds checking
    cvelistv5