Buffer overflow in iPadOS and Apple iOS - CVE-2026-28858
Published: March 25, 2026
Vulnerability identifier: #VU124420
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28858
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a boundary error in Telephony. A remote attacker can send specially crafted data to the service, trigger memory corruption and perform a denial of service attack.
Affected software
iPadOS
Apple iOS
Apple iOS
How to mitigate CVE-2026-28858
Install updates from vendor's website.
iPadOS - update to 26.4 23E246
Apple iOS - update to 26.4 23E246
Apple iOS - update to 26.4 23E246