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Apple iOS, macOS, visionOS, watchOS EUVDEUVD-2026-29282

| CVE-2026-28988 MEDIUM
Improper Access Control (CWE-284)
2026-05-11 apple GHSA-8pv7-gjvg-66w2
5.5
CVSS 3.1 · Vendor: apple
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Install malicious app locally
  2. Delivery
    App queries privacy preferences system
  3. Exploit
    App discovers user-restricted accessible data
  4. Execution
    App reads privacy-bypassed data
  5. Impact
    App exfiltrates data to attacker

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires a malicious application to be installed and executed on the target device with standard user-level privileges. The app must be able to interact with the privacy preferences system on the specific platform (iOS, macOS, visionOS, or watchOS). No special OS configuration, feature toggles, or non-default settings are required; the vulnerability exists in the baseline privacy implementation. Exploitation is limited to local access (AV:L in CVSS vector), meaning remote network-based attacks are not possible. Additionally, successful data exfiltration depends on the device user having previously restricted app access via privacy settings; if a user has not configured privacy restrictions, the vulnerability provides no additional data access beyond normal app permissions.

Impact

Risk assessment reveals a significant disconnect between academic severity metrics and real-world exploitation likelihood. CVSS 5.5 (Medium) with AV:L/AC:L/PR:L indicates local, low-complexity attack by an already-authenticated app-a realistic but bounded threat model. However, EPSS score of 0.01% (2nd percentile) is exceptionally low, suggesting minimal real-world exploitation despite public disclosure. No CISA KEV status is listed, indicating no confirmed active exploitation. SSVC classification (Exploitation: none, Automatable: no, Technical Impact: partial) aligns with the low EPSS, categorizing this as a lower-priority vulnerability requiring local presence and offering only partial data exfiltration. The gap between CVSS and EPSS reflects Apple's strong software ecosystem enforcement-while technically feasible, attackers face deployment friction (requiring malicious app distribution through App Store or sideloading) and user trust barriers. Organizations running current OS versions face minimal real-world risk; priority should focus on standard patch cadence rather than emergency response.

Exploit ScenarioDerived

A malicious app installed on an iOS device (either through social engineering via App Store or through sideloading on macOS) runs with user privileges and probes the privacy preferences system to discover which user-restricted permissions are accessible. The app then silently accesses data-such as contacts, location, or photos-that the user explicitly denied in Settings, exfiltrating the data without permission prompts or user notification. The attack succeeds because the privacy enforcement layer failed to validate the app's entitlements against the user's privacy configuration.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 13, 2026

Privacy bypass in Apple operating systems allows local authenticated apps to circumvent user-configured privacy restrictions through permission mishandling. The vulnerability affects iOS, iPadOS, macOS Tahoe, visionOS, and watchOS versions prior to 26.5. An attacker with local app execution privileges can access sensitive data classified as restricted by user privacy settings, though without authentication bypass or integrity compromise. Fixed in coordinated OS updates across Apple's ecosystem.

RemediationAI

Vendor-released patch: Update to iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, or watchOS 26.5. For all affected platforms, navigate to Settings > General > Software Update (iOS/iPadOS/watchOS) or System Settings > General > Software Update (macOS/visionOS) and install the latest available version. Additional details on platform-specific security updates are available in Apple security advisories: https://support.apple.com/en-us/127110 (macOS), https://support.apple.com/en-us/127115 (iOS/iPadOS), https://support.apple.com/en-us/127119 (visionOS), https://support.apple.com/en-us/127120 (watchOS). No compensating controls mitigate the privacy bypass without patching; however, organizations can reduce exposure by restricting sideloaded app installation (macOS, iOS) and using Mobile Device Management (MDM) policies to enforce App Store-only distribution on managed devices.

Affected VersionsENISA

iOS and iPadOS 0 <26.5
visionOS 0 <26.5
watchOS 0 <26.5
macOS 0 <26.5

Affected Packages

euvd ios_and_ipados fix: 26.5
euvd macos fix: 26.5
euvd visionos fix: 26.5
euvd watchos fix: 26.5

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability stems from insufficient access control enforcement in Apple's privacy permission model, classified under CWE-284 (Improper Access Control-Permissions, Privileges, and Other Access Controls). The root cause involves inadequate restrictions on how apps interact with the privacy preferences system. While details are limited by Apple's disclosure practices, this reflects a common class of vulnerabilities where privilege boundaries or capability enforcement mechanisms fail to prevent unauthorized data access. The affected systems span multiple Apple platforms running kernel and framework code that enforces privacy sandboxing, suggesting a shared component or framework flaw across iOS, macOS, visionOS, and watchOS.

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Severity by source

Vendor (apple) PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from Vendor (apple) · only source for this CVE.

CVSS VectorVendor: apple

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
CVSS changed
May 12, 2026 - 22:22 NVD
5.5 (MEDIUM)
Patch available
May 11, 2026 - 22:18 EUVD
CVE Published
May 11, 2026 - 20:08 nvd
UNKNOWN (no severity yet)
CVE Published
May 11, 2026 - 20:08 nvd
MEDIUM 5.5

DescriptionCVE.org

A permissions issue was addressed with additional restrictions. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, watchOS 26.5. An app may be able to bypass certain Privacy preferences.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Data Quality
5 sources
Confidence: Medium

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.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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