AppleCVE-2026-64766
Apple iOS and iPadOS: integer overflow
High7.8CVE-2026-64766 · Published Jul 27, 2026 · updated Aug 17, 2026
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| iOS and iPadOS Product | < 18.7.10 | 18.7.10 |
| < 26.6 | 26.6 | |
| macOS Product | < 14.8.8 | 14.8.8 |
| < 15.7.8 | 15.7.8 | |
| < 26.6 | 26.6 | |
| tvOS Product | < 26.6 | 26.6 |
| visionOS Product | < 26.6 | 26.6 |
| watchOS Product | < 26.6 | 26.6 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/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
- www.cve.org/CVERecord?id=CVE-2026-64766
- nvd.nist.gov/vuln/detail/CVE-2026-64766
- support.apple.com/en-us/128066
- support.apple.com/en-us/128067
- support.apple.com/en-us/128068
- support.apple.com/en-us/128069
- support.apple.com/en-us/128070
- support.apple.com/en-us/128071
- support.apple.com/en-us/128072
- support.apple.com/en-us/148287
More Apple advisories
All Apple| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 27 | Apple iOS and iPadOS: out-of-bounds write | Critical9.8 | 18.7.10+3 more |
| Jul 27 | Apple iOS and iPadOS: out-of-bounds write | Critical9.8 | 18.7.10+3 more |
| Jul 27 | Apple iOS and iPadOS: buffer overflow | Critical9.8 | 18.7.10+2 more |
| Jul 27 | Apple iOS and iPadOS: out-of-bounds write | Critical9.8 | 18.7.10+2 more |
| Jul 27 | Apple iOS and iPadOS: integer overflow | Critical9.8 | 18.7.10+3 more |
| Jul 27 | A memory initialization issue was addressed with improved memory handling | Critical9.8 | 26.6+2 more |