CVE-2024-27834: Apple iOS, iPadOS, macOS, Safari, tvOS, watchOS pointer authentication bypass

CVE-2024-27834 · Severity: critical · Exploited in the wild · Published 2026-11-04

Apple's operating systems and Safari web browser contain a critical flaw in pointer authentication, a hardware security feature that prevents attackers from tampering with memory. An attacker with write access to device memory can exploit this flaw to bypass this protection, potentially allowing them to execute arbitrary code and take complete control of the device. This vulnerability has been actively exploited in the wild.

Technologies: Apple Ios, Apple iPadOS, Apple macOS, Apple Multiple Products, Apple Safari, Apple Tvos, Apple watchOS. Vendors: Apple.

Quick answers

Is CVE-2024-27834 exploited in the wild?
Yes. CVE-2024-27834 is known to be exploited in the wild, first recorded on 4 November 2026. Treat it as urgent.
How severe is CVE-2024-27834?
Critical severity, published 4 November 2026.
Which products and versions are affected?
Apple Ios 10.5 and earlier; Apple iPadOS 10.5 and earlier; Apple macOS 10.5 and earlier; Apple Safari 10.5 and earlier; and 2 more.
Is there a fix for CVE-2024-27834?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2024-27834 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2024-27834?
Check whether you run Apple Ios, Apple iPadOS, Apple macOS or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an improper authentication flaw affecting pointer authentication security mechanisms across multiple Apple platforms. An attacker requires arbitrary read and write capability to device memory to bypass the pointer authentication protections. Once successful, the attacker can gain code execution and complete system compromise; a patch is available.

Affected products

  • Apple iOS 10.5 and earlier
  • Apple iPadOS 10.5 and earlier
  • Apple macOS 10.5 and earlier
  • Apple Safari 10.5 and earlier
  • Apple tvOS 10.5 and earlier
  • Apple watchOS 10.5 and earlier

Timeline

  • 2026-11-04: disclosed
  • exploited: Actively exploited in the wild

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