Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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ReconDeliver malicious app to device
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DeliveryUser launches app
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ExploitApp triggers uninitialized kernel memory read
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InstallKernel memory layout leaked
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C2KASLR defeated
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ExecuteChain with kernel corruption exploit
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ImpactFull kernel compromise
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Variable initialization checks
|
| Exploitation Conditions | Exploitation requires three concrete things: a malicious or compromised application installed on the target device, the ability to execute that app so it reaches the affected kernel interface, and user interaction to launch it (CVSS UI:R) - there is no network-reachable vector (AV:L). The description gives no "when configured with..." qualifier, so no non-default setting or special entitlement is documented as a prerequisite. What limits impact: the flaw is confined to confidentiality (C:H/I:N/A:N), so no code execution, privilege escalation, or denial of service results directly; it is platform-specific to the listed Apple OS versions prior to the fixed releases; and the app must remain running long enough to trigger the vulnerable path. It cannot be exploited remotely and does not affect users who never install or launch untrusted apps. |
| Impact | Signals point to a low-priority, defense-in-depth fix rather than an emergency patch. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N = 5.5) makes clear this is neither remotely reachable nor unauthenticated in the network sense: the attacker must already have a locally executing app and must convince the user to launch it, and Apple explicitly assigns no integrity or availability impact. EPSS is only 0.21% (11th percentile), squarely micro-targeted, and there is no KEV listing and no reported POC - exploit status is "no public exploit identified at time of analysis." Note that the base score is driven almost entirely by C:H; if chained with a separate kernel memory-corruption bug it becomes far more valuable, so it is a chaining primitive rather than a standalone threat. Data caveats: the input provides only "Patch: Available from vendor" without granular per-OS release dates, the reference titles are empty (cveorg entries carry no labels), and the EUVD affected-version ranges use the generic "0 <X" form, so exact earlier affected point releases cannot be enumerated from the supplied data. |
| Exploit ScenarioDerived | An attacker distributes a malicious or trojanized app through a sideloading channel, enterprise certificate, or social-engineering lure, and the victim launches it. On execution the app triggers the affected kernel code path and reads back uninitialized memory, harvesting kernel pointers that reveal the layout of kernel memory and defeat KASLR. The attacker then combines that layout knowledge with a separate kernel memory-corruption exploit to achieve reliable privilege escalation - this CVE alone yields no code execution. |
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Alert meAnalysisAIv1 – Sep 15, 2026
Apple fixed a kernel uninitialized-memory flaw (CWE-457) across iOS/iPadOS, macOS, tvOS, visionOS, and watchOS in which a locally installed app can determine kernel memory layout, defeating address-space randomization. The impact is information disclosure only - high confidentiality, no integrity or availability impact - and exploitation requires a local app plus user interaction (CVSS:3.1/AV:L/AC:L/PR:N/UI:R, 5.5). Apple shipped patches on [dates not specified] for iOS/iPadOS 26.7 and 27, macOS Sequoia 15.8, macOS Tahoe 26.7, macOS Golden Gate 27, tvOS 27, visionOS 27, and watchOS 27; no public exploit code or active exploitation is indicated, and EPSS is low (0.21%, 11th percentile).
RemediationAI
Apply the vendor updates as soon as practical: iOS and iPadOS 26.7 or 27, macOS Sequoia 15.8, macOS Tahoe 26.7, macOS Golden Gate 27, tvOS 27, visionOS 27, and watchOS 27 - see the Apple advisories at https://support.apple.com/en-us/149034 through 149043 for the update matching each platform. Patch status is "Patch available per vendor advisory"; the input does not confirm an independent fix version beyond these OS releases. Where immediate updating is impossible, the realistic compensating controls are operational rather than technical, and each has trade-offs: restrict app installation to approved sources and enforce MDM-managed allowlisting (reduces exposure but does not stop a malicious app that is already trusted and does not remediate the kernel flaw itself), and tighten user training around launching untrusted apps (weak, user-dependent, and easily bypassed via social engineering). Because the impact is limited to information disclosure, blocking untrusted app execution or reducing the installed-app attack surface lowers the value of the leak without incurring availability costs; there is no kernel configuration flag that disables this specific code path.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 5 packages in euvd
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Technical ContextAI · show details
The root cause is CWE-457 (Use of Uninitialized Variable): an affected kernel code path returned or copied memory that had never been initialized, and the fix was described as "improved memory handling." Because the leaked region contains kernel pointers or layout metadata, the bug is effectively an address-space-layout-disclosure primitive - it does not by itself bypass the sandbox, escalate privileges, or execute code, but it removes a key mitigation (kernel ASLR/KASLR) that more serious kernel exploits rely on. The CPE strings cover the entire Apple platform family - cpe:2.3:a:apple:ios_and_ipados, apple:macos, apple:tvos, apple:visionos, and apple:watchos - confirming a shared XNU kernel component fixed in parallel across every operating system that ships it, which is the standard pattern for Apple kernel advisories released as a synchronized security update wave.
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Local app execution with UI:R for launch, PR:N since no privileges are needed, and confidentiality-only kernel layout disclosure with no integrity or availability impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
4DescriptionCVE.org
A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to determine kernel memory layout.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
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EUVD-2026-78117
GHSA-f9ph-w48v-6xp9
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB