Apple Multiple Products Improper Authentication Vulnerability

🚨SEVERITY: MEDIUM — CVSS 5.5Security Advisory

TL;DR 📌

  • Apple iOS, iPadOS, macOS, Safari, tvOS and watchOS 10.5 contain an improper authentication vulnerability which could allow an attacker with arbitrary read and write capability to bypass pointer authentication.
  • Highest CVSS: 5.5 (Medium).
  • Listed in CISA KEV (2026-11-04) — this is being exploited in the wild.
  • Fixed in 10.5, 14.5, 17.5, 2.44.2 — upgrade to this release or later.
  • CVEs: CVE-2024-27834.

What it is

Apple iOS, iPadOS, macOS, Safari, tvOS and watchOS 10.5 contain an improper authentication vulnerability which could allow an attacker with arbitrary read and write capability to bypass pointer authentication.

For leadership 🧭

Executive summary. Risk is Medium (CVSS 5.5) across any Apple kit you run. Follow the remediation in the vendor advisory within Immediate — CISA KEV entries carry a federal remediation deadline.

Why it matters:

  • Exposure depends on deployment topology and which access paths reach the affected component.
  • Treat internet-facing and management-plane instances as higher risk than internal-only ones.
  • Keep monitoring for abnormal authentication and configuration events until upgrades complete.

Now / Next / Later:

  • Now: confirm whether you run the affected versions, and check exposure of any that are internet-facing.
  • Next: apply the remediation the advisory specifies, through an approved change window.
  • Later: add a control check so builds cannot drift back onto a vulnerable train.

Source