Is CVE-2026-65391 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-65391 being exploited in the wild.

How severe is CVE-2026-65391?

High severity, with a CVSS score of 8.8, published 14 September 2026.

Which products and versions are affected?

Apple iPadOS before 26.6.1; Apple macOS Tahoe before 26.6.2; Apple Safari before 26.6.1; Apple Tvos before 27; and 2 more.

Is there a fix for CVE-2026-65391?

A patch was published on 2026-08-17: Safari 26.6.1, iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-65391 attacked?

It is attacked over the network.

Am I affected by CVE-2026-65391?

Check whether you run Apple iPadOS, Apple Iphone Os, 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.

CVE-2026-65391: Apple Safari out-of-bounds write in memory handling

CVE-2026-65391 · Severity: high · CVSS 8.8 · Published 2026-09-14

Safari is Apple's web browser used by millions of users to browse the internet. A memory corruption vulnerability in Safari's rendering engine could allow attackers to crash the browser or potentially execute malicious code when users view specially crafted websites. This poses a risk to user data and system stability.

Technologies: Apple iPadOS, Apple Iphone Os, Apple macOS, Apple Safari, Apple Tvos, Apple Visionos, Apple watchOS. Vendors: Apple.

Quick answers

Is CVE-2026-65391 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-65391 being exploited in the wild.
How severe is CVE-2026-65391?: High severity, with a CVSS score of 8.8, published 14 September 2026.
Which products and versions are affected?: Apple iPadOS before 26.6.1; Apple macOS Tahoe before 26.6.2; Apple Safari before 26.6.1; Apple Tvos before 27; and 2 more.
Is there a fix for CVE-2026-65391?: A patch was published on 2026-08-17: Safari 26.6.1, iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-65391 attacked?: It is attacked over the network.
Am I affected by CVE-2026-65391?: Check whether you run Apple iPadOS, Apple Iphone Os, 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

An out-of-bounds write vulnerability exists in Safari's memory handling, triggered when processing maliciously crafted web content. The vulnerability stems from insufficient bounds checking in memory operations, allowing an attacker to write data beyond allocated buffer boundaries. The attack vector is network-based, requiring a user to visit a malicious webpage—no authentication or additional privileges required. Successful exploitation can lead to memory corruption, crashes, or potentially arbitrary code execution. The issue is fixed in Safari 26.6.1 and subsequent versions (iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27) with improved bounds checking.

Affected products

Apple Safari before 26.6.1
Apple iOS before 26.6.1
Apple iPadOS before 26.6.1
Apple macOS Tahoe before 26.6.2
Apple tvOS before 27
Apple visionOS before 27
Apple watchOS before 27

Timeline

2026-09-14: disclosed: CVE-2026-65391 published
2026-08-17: patched: Safari 26.6.1, iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27 released

References

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