Integer overflow in Apple iOS And Ipados
CVE-2026-65390
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- support.apple.com/en-us/148281 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/148282 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/148286 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/149036 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/149037 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/149038 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-65390?
- CVE-2026-65390 is a high-severity vulnerability in Apple iOS And Ipados, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-09-14.
- How severe is CVE-2026-65390?
- High severity. CVSS v3 base score is 8.8 out of 10.