Improper input validation in macOS - CVE-2026-28878

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Main Vulnerability Database Vulnerabilities #VU124342

Improper input validation in macOS - CVE-2026-28878

Published: March 25, 2026


Vulnerability identifier: #VU124342
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28878
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in Crash Reporter when handling crash reports. A local user can provide specially crafted input to cause a denial of service.

Exploitation does not require elevated privileges.


Affected software

macOS
iPadOS
Apple iOS
tvOS
visionOS
watchOS

How to mitigate CVE-2026-28878

Install update from vendor's website.

macOS - addressed in versions 26.4 25E246, 14.8.5 23J423, 15.7.7 24G720
iPadOS - addressed in versions 18.7.7 22H333, 26.4 23E246
Apple iOS - addressed in versions 18.7.7 22H333, 26.4 23E246
tvOS - update to 26.4 23L243
visionOS - update to 26.4
watchOS - update to 26.4 23T240

External References

Related Security Bulletins