macOS

Operating Systems

Apple UNIX-based operating system for Mac workstations and developer environments.

www.apple.com/macos

30-day hazard rating

Calm1.9 / 10

Incidents (30d): 3
Severity-weighted volume: 1.5
Critical / high (clustered): 0 / 0
Avg time to resolve: n/a

Volume of incidents (weighted by severity) over the last 30 days, raised when fixes are slow. 1 = calm, 10 = constant breakage.

Incidents, 30 days: 3; -25%vs prior 30 days
Reports, 30 days: 3
Active advisories: 8
Regression lifespan: n/a; nothing resolved yet

Incidents per day, last 30 days

View as table

macOS incidents per day, last 30 days
Date	Incidents	Reports
2026-11-07	0	0
2026-11-06	0	0
2026-11-05	0	0
2026-11-04	1	1
2026-11-03	0	0
2026-11-02	0	0
2026-11-01	0	0
2026-10-31	0	0
2026-10-30	0	0
2026-10-29	0	0
2026-10-28	0	0
2026-10-27	1	1
2026-10-26	0	0
2026-10-25	0	0
2026-10-24	1	1
2026-10-23	0	0
2026-10-22	0	0
2026-10-21	0	0
2026-10-20	0	0
2026-10-19	0	0
2026-10-18	0	0
2026-10-17	0	0
2026-10-16	0	0
2026-10-15	0	0
2026-10-14	0	0
2026-10-13	0	0
2026-10-12	0	0
2026-10-11	0	0
2026-10-10	0	0
2026-10-09	0	0

Active advisories

minorInvestigating
Second Incident of the day
A signal handler (SignalHandler) with ID 82467e23-3551-44a6-bb56-ca36cfda68e9 caused a crash on the macOS Monterey environment. No specific version or configuration details are provided.
macOS
since Nov 4, 16:21 UTC3 d 3 h
Velocity
1.3
minorInvestigating
'I Felt Blind Panic.' They Opened Their New $2k iPhone Duo–and It Broke
A technical incident affecting users of macOS Monterey caused the iOS 17.4.1 update to crash, resulting in a loss of functionality and user frustration.
macOS
since Oct 27, 16:21 UTC11 d 3 h
Velocity
0.8
minorInvestigating
The first broken iPhone Duos are here
An update to iOS 17.2 caused crashes in the macOS Ventura environment, affecting users who have upgraded their devices.
macOS
since Oct 24, 17:57 UTC14 d 1 h
Velocity
0.6
highInvestigating
Apple ID Lockout Bricks App Store on macOS Monterey
A user reported their Apple ID was locked, preventing them from updating apps in the App Store. This caused a complete outage of app updates for critical banking and payment apps.
macOS
since Oct 6, 11:31 UTC32 d 8 h
Velocity
0.1
minorWorkaround available
macOS 27: ifconfig command no longer prints hardware MAC address
A recent macOS update (version not specified) broke several scripts that relied on the ifconfig command to print hardware MAC addresses, which are now all reported as 02:00:00:00:00:00. Users can still obtain the MAC addresses using networksetup -getmacaddress en0.
macOS
since Sep 27, 17:21 UTC41 d 2 h
Velocity
0.1
minorInvestigating
Apple's screen time API is broken
The iOS 17 Screen Time API has caused a crash in the macOS Ventura environment, affecting users who have enabled this feature. The issue is currently unresolved.
macOS
since Oct 7, 18:00 UTC31 d 1 hviOS 17, macOS Ventura
Velocity
0.0
minorInvestigating
LeRebot So-101 Crashes on macOS Monterey
The LeRebot version 2.3.7 has crashed on a user's Mac running macOS Monterey, affecting the application's ability to function properly.
macOS
since Sep 29, 15:00 UTC39 d 4 h
Velocity
0.0
highInvestigating
Apple macOS: CVE-2026-65400 Improper Authentication Vulnerability
A security vulnerability (CVE-2026-65400) involving improper authentication affects Apple macOS. Stakeholders must apply vendor mitigations and follow CISA BOD 26-04 guidance.
macOS
since Aug 18, 00:00 UTC81 d 19 h
Velocity
0.0

Version hazard notices

Use with caution:macOS iOS 17, macOS Ventura1 active minor-severity incident
- minorInvestigatingApple's screen time API is broken

Resolved incident history

No resolved incidents on record yet.