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.
Key facts
- CVSS score
- 8.8 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-190
- EPSS score
- 0.4% (34th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2026-77978)
- Published
- September 14, 2026
- NVD last modified
- September 16, 2026
- Status
- Analyzed
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2026-77978 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2026.
View on the EU Vulnerability DatabaseAffected products
- apple / ipados
- apple / iphone os
- apple / macos
- apple / safari
- apple / tvos
- apple / visionos
- apple / watchos
Certified products that may be affected
38 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Apple macOS 26 Tahoe: FileVault - Apple Inc. - Common Criteria CCEVS-VR-VID-11696-2026 - active
- Apple macOS 26 Tahoe - Apple Inc. - Common Criteria CCEVS-VR-VID-11695-2026 - active
- Apple macOS 15 Sequoia - Apple Inc. - Common Criteria CCEVS-VR-VID-11648-2026 - active
- Strong Customer Authentication for Apple Pay on MacBook Air 2024 with M3running macOS Sequoia 15.4 - Apple Inc. - Common Criteria 2025-11-INF-4674 - active
- Apple macOS 14 Sonoma - Apple Inc. - Common Criteria CCEVS-VR-VID-11584-2025 - active
See all 38 in the Security Certifications Explorer.
References
- https://support.apple.com/en-us/148281(Release Notes, Vendor Advisory)
- https://support.apple.com/en-us/148282(Release Notes, Vendor Advisory)
- https://support.apple.com/en-us/148286(Release Notes, Vendor Advisory)
- https://support.apple.com/en-us/149036(Release Notes, Vendor Advisory)
- https://support.apple.com/en-us/149037(Release Notes, Vendor Advisory)
- https://support.apple.com/en-us/149038(Release Notes, Vendor Advisory)
Last updated September 18, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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