Advisoriesby IbisAppleCVE-2026-65390
Apple Safari: integer overflow
Fix: upgrade to 26.6.1 or later (3 fixed versions below)
An integer overflow was addressed with improved input validation. 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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Safari Product | < 26.6.1 | 26.6.1 |
| iOS and iPadOS Product | < 26.6.1 | 26.6.1 |
| macOS Product | < 26.6.2 | 26.6.2 |
| tvOS Product | < 27 | 27 |
| visionOS Product | < 27 | 27 |
| watchOS Product | < 27 | 27 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity from
- CISA (its enrichment of the CVE record)
- Weakness
- CWE-190