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iOS EUVDEUVD-2026-15053

| CVE-2026-20668 MEDIUM
Insertion of Sensitive Information into Log File (CWE-532)
2026-03-25 apple
5.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A09:2025 - Security Logging & Alerting Failures
ASVS 5.0
V16 - Security Logging and Error Handling Log data sanitization
Impact

While CVSS score and vector data are not available, the practical risk assessment must rely on exploitation signals and attack surface analysis. The vulnerability is classified as information disclosure with medium-to-high severity due to the universal nature of logging mechanisms and the broad application attack surface. Apple's security advisory references (126346, 126348, 126353, 126793, 126795, 126796) across six distinct advisory documents indicate coordinated disclosure and patching across multiple OS lines, suggesting Apple treated this as a significant privacy concern. The attack vector appears to be local (requiring an installed application on the device), which moderates the risk compared to remote vulnerabilities, but the technical impact is high since sensitive user data is exposed. No public exploit code or active exploitation in the wild has been referenced, but the simplicity of the attack (an app reading unredacted logs) and the breadth of affected versions suggest this could be weaponized quickly if details emerge. The lack of CVSS metrics may reflect Apple's preference for coordinated advisory publication rather than CVSS scoring, but the privacy implications and multi-version coordination indicate this warrants priority patching.

Exploit ScenarioDerived

An attacker distributes a seemingly benign application through the App Store or alternate installation methods. Once installed on a victim's device, the application reads unredacted system logs that contain sensitive information such as authentication tokens, personal identifiers, or user behavior patterns that should have been masked by the OS logging redaction mechanisms. The attacker exfiltrates this data during normal app operation without requiring elevated privileges, as the logging subsystem inadvertently provides the data to the sandboxed application. This scenario is straightforward to execute given the local attack vector and requires only standard application-level file I/O capabilities.

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 – Mar 25, 2026

A logging issue in Apple's operating systems allows improper data redaction in system logs, enabling installed applications to access sensitive user data that should have been masked. This vulnerability affects iOS 18.7.7 and earlier, iPadOS 18.7.7 and earlier, iOS 26.3 and earlier, iPadOS 26.3 and earlier, macOS Sequoia 15.7.5 and earlier, macOS Sonoma 14.8.5 and earlier, macOS Tahoe 26.3 and earlier, and visionOS 26.3 and earlier. An attacker with the ability to install or control an application on an affected device could exploit inadequate log data filtering to extract confidential user information that should be protected by the operating system's redaction mechanisms.

RemediationAI

Update immediately to iOS 18.7.7 or iPadOS 18.7.7 or later, iOS 26.3 or iPadOS 26.3 or later, macOS Sequoia 15.7.5 or later, macOS Sonoma 14.8.5 or later, macOS Tahoe 26.3 or later, or visionOS 26.3 or later, depending on the affected device. Consult the respective Apple security advisories at the URLs provided in the affected products section for version-specific patching guidance and verification steps. Until patches can be deployed, restrict the installation of untrusted third-party applications and review device privacy settings to limit app permissions to system logs and diagnostic data. Organizations managing fleet deployments should prioritize this update across all Apple devices given the broad affected version range and the privacy-sensitive nature of the vulnerability.

Affected VersionsENISA

macOS 0 <26.3
macOS 0 <14.8.5
iOS and iPadOS 0 <26.3
visionOS 0 <26.3
macOS 0 <15.7.5
iOS and iPadOS 0 <18.7.7

Affected Packages

euvd ios_and_ipados fix: 18.7.7, 26.3
euvd macos fix: 14.8.5, 15.7.5, 26.3
euvd visionos fix: 26.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 3 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 data redaction mechanisms within Apple's system logging infrastructure across multiple operating system platforms (iOS, iPadOS, macOS, and visionOS). This is fundamentally an information disclosure issue (CWE category) where system logs containing sensitive data are not properly sanitized before being made accessible to third-party applications. The affected products span multiple macOS versions (Sequoia 15.x, Sonoma 14.x, and Tahoe 26.x), iOS/iPadOS versions (18.7.x and 26.3.x), and visionOS (26.3.x), as identified through the comprehensive CPE strings covering apple:ios_and_ipados, apple:macos, and apple:visionos across all version ranges. The root cause involves the logging subsystem failing to consistently apply data masking policies before exposing log entries to sandbox-isolated applications, allowing circumvention of the intended privacy boundary.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

2
Patch available
Apr 16, 2026 - 05:29 EUVD
26.3,14.8.5,15.7.5
CVE Published
Mar 25, 2026 - 00:35 nvd
MEDIUM 5.5

DescriptionCVE.org

A logging issue was addressed with improved data redaction. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, visionOS 26.3. An app may be able to access sensitive user data.

Executive ViewAI

Why It Matters

Organizations using A logging should be aware of moderate risk from CVE-2026-20668, a log file exposure vulnerability rated CVSS 5.5. This could allow unauthorized file access. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict endpoint access, redact sensitive data in logs.

Threat Intelligence Overview

EPSS Score
0.0%
Top 93% 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
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
Low
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

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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