Kernel code execution via memory-entry integer overflow
Published Jun 23, 2023 · Updated Oct 21, 2025
Integer overflow in the XNU kernel in Apple iOS, iPadOS, macOS, and watchOS allows local users to execute code with kernel privileges. The mach_make_memory_entry_internal routine adds attacker-controlled offset and size values without detecting wraparound, allowing an oversized memory entry to bypass its bounds check. Exploitation requires app execution or WebContent reachability and provides kernel memory access that supports full kernel code execution.
Summary
What happened
Integer overflow in the XNU kernel in Apple iOS, iPadOS, macOS, and watchOS allows local users to execute code with kernel privileges. The mach_make_memory_entry_internal routine adds attacker-controlled offset and size values without detecting wraparound, allowing an oversized memory entry to bypass its bounds check. Exploitation requires app execution or WebContent reachability and provides kernel memory access that supports full kernel code execution.
The record
- CVE
- CVE-2023-32434
- Published
- Jun 23, 2023
- Updated
- Oct 21, 2025
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- CWE-190, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 23, 2023CVE publishedPublication date reported by the CVE source.
- Oct 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <15.7
- Affected versionversion=unspecified <16.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Trigon deterministic kernel exploitfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- CISA Known Exploited Vulnerabilities entryknown exploited catalog
- Operation Triangulation exploit chainexploit chain
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo