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Vulnerability record · CVE-2026-65391 · published 14 September 2026

CVE-2026-65391: Apple safari integer overflow vulnerability

Apple · Safari

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.

8.8 CVSS 3.1 High EPSS 0.41% · top 67.1% CWE-190 · Integer overflow
8.8CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
6References
16 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.apple.com/en-us/148281 Release NotesVendor Advisory
https://support.apple.com/en-us/148282 Release NotesVendor Advisory
https://support.apple.com/en-us/148286 Release NotesVendor Advisory
https://support.apple.com/en-us/149036 Release NotesVendor Advisory
https://support.apple.com/en-us/149037 Release NotesVendor Advisory
https://support.apple.com/en-us/149038 Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-65391), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.