A buffer overflow was addressed with improved size validation. This issue is fixed in 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. An app may be able to execute arbitrary code with kernel privileges.
[POC] CVE-2026-64747 — ave263-chain
iPad 8 iPadOS 26.3 AVE toolchain research (CVE-2026-64747 class)
[POC] CVE-2026-64747 — agxprobe
CVE-2026-64747 AGXG14P count-bitmask OOB trigger probe (A15/iOS 26.5.2)
PoC: CVE-2026-64747
Root cause + macOS reachability PoC for CVE-2026-64747 (AppleAVE2 kext buffer overflow, fixed 26.6 / 905.40.1). Fully reversed AppleAVE2UserClient wire protocol, mode-5 LRB overflow math, IOKit PoC driving the configure path.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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