CVE-2026-28858

CWE-120 — Classic Buffer Overflow3 documents3 sources
Severity
9.8CRITICAL
EPSS
0.1%
top 66.68%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Apple IOS AND IpadosApple IpadosApple Iphone OS
Timeline
PublishedMar 25

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶NVDapple/ipados< 26.4
▶CVEListV5apple/ios_and_ipados< 26.4
▶NVDapple/iphone_os< 26.4

🔴Vulnerability Details

2
GHSA
GHSA-g835-6c4r-v6rm: A buffer overflow was addressed with improved bounds checking↗2026-03-25
▶
CVEList
CVE-2026-28858: A buffer overflow was addressed with improved bounds checking↗2026-03-25
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CVE-2026-28858 (CRITICAL CVSS 9.8) | A buffer overflow was addressed wit | cvebase.io