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HIGH

CVE-2026-65391

CVSS v3

8.8

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to memory corruption.

Technical details

Published
2026-09-14
Last Modified
2026-09-16

Frequently asked questions

What is CVE-2026-65391?

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to memory corruption.

Is CVE-2026-65391 actively exploited?

Active exploitation of CVE-2026-65391 has not been confirmed. Its EPSS score was 0.4% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-65391?

CVE-2026-65391 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2026-65391 affecting your environment?

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