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CVE-2026-28858

CRITICAL
9.8
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-28858
State
PUBLISHED
Assigner
apple
Reserved
2026-03-03 16:36 UTC
Published
2026-03-25 00:32 UTC
Last updated
2026-04-02 18:20 UTC
Primary CWE
CWE-120
CWE-120 Buffer Copy without Checking Size of Input ('Classic…
Vendor / Product
Apple / iOS and iPadOS
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Apple iOS and iPadOS — 0 < 26.4
Weakness (CWE)
CWESourceDescription
— cna A remote user may be able to cause unexpected system termination or corrupt kernel memory
CWE-120 adp CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 adp CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References (1)
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