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iOS CVE-2026-20694

| EUVDEUVD-2026-15068 MEDIUM
Improper Link Resolution Before File Access (CWE-59)
2026-03-25 apple
5.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Symlink resolution safety
Impact

While the CVSS score and vector are not available, the vulnerability is classified as Information Disclosure with broad platform impact across iOS, iPadOS, and multiple macOS versions, suggesting moderate to significant real-world risk. The fact that Apple released patches across six different security bulletins (126346, 126348, 126349, 126350, 126794, 126795, 126796) indicates the vendor prioritized this issue across multiple OS families simultaneously, implying elevated concern. The attack vector likely requires local code execution within an application context, which raises the complexity bar but is still achievable through malicious or compromised apps in the App Store ecosystem. Without CVSS vector details, EPSS scoring, or KEV confirmation, the exploitation probability cannot be precisely quantified, but the rapid multi-platform patching response and the nature of symlink vulnerabilities (which are well-understood attack vectors) suggest this represents a genuine security priority rather than a theoretical issue. Organizations should treat this as a medium-to-high priority for patching timelines given the sensitivity of user data at risk and the potential for sandboxed application escape.

Exploit ScenarioDerived

A malicious application distributed through the App Store could exploit the symlink handling vulnerability to break out of its sandbox restrictions and access sensitive user data such as private messages, photos, or authentication tokens stored in protected directories. By crafting symbolic links within the application's permitted file system access zone that point to restricted user directories, the application could leverage the OS's improper symlink resolution to read data it should not have access to. This could occur without explicit user awareness or additional interaction beyond installation and basic use of the application.

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

This vulnerability involves improper handling of symbolic links in Apple operating systems that could allow an application to access user-sensitive data without proper authorization. The flaw affects iOS and iPadOS versions prior to 26.3, macOS Sequoia versions prior to 15.7.4, macOS Sonoma versions prior to 14.8.4, and macOS Tahoe versions prior to 26.3 and 26.4. An attacker with the ability to execute code in a sandboxed application context could potentially bypass security restrictions to access protected user information, though no active exploitation in the wild has been confirmed at this time.

RemediationAI

Immediately update iOS devices to version 26.3 or later, update iPadOS to version 26.3 or later, update macOS Sequoia to version 15.7.4 or later, update macOS Sonoma to version 14.8.4 or later, and update macOS Tahoe to version 26.3 or later. Consult the corresponding Apple security advisories at the vendor URLs provided (https://support.apple.com/en-us/126346 through 126796) for detailed patch availability and installation procedures. Until patching is completed, administrators should enforce stricter application sandboxing policies, disable unnecessary file system permissions for applications, and monitor system logs for suspicious symlink access patterns. Additionally, review installed third-party applications for legitimacy and consider restricting app installations to verified sources pending patch deployment.

Affected VersionsENISA

macOS 0 <26.4
macOS 0 <15.7.5
macOS 0 <14.8.4
iOS and iPadOS 0 <26.3
macOS 0 <15.7.4
macOS 0 <26.3
macOS 0 <14.8.5

Affected Packages

euvd ios_and_ipados fix: 26.3
euvd macos fix: 14.8.4, 14.8.5, 15.7.4, 15.7.5, 26.3, 26.4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 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 is a symlink handling issue classified as an Information Disclosure vulnerability (CWE category not specified in available data). The affected technology involves the file system abstraction layer across Apple's operating systems that processes symbolic links. CPE data indicates the vulnerability impacts the broader Apple iOS/iPadOS platform (cpe:2.3:a:apple:ios_and_ipados) and Apple macOS platform (cpe:2.3:a:apple:macos) across multiple releases. The root cause relates to insufficient validation or sanitization of symbolic link references, which could allow applications to traverse security boundaries and access sensitive files outside their intended sandbox environment. This is a class of vulnerability where attackers exploit the operating system's symlink resolution mechanism to circumvent access controls that should prevent applications from reading user-sensitive data.

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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:L/UI:N/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
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Patch available
Apr 16, 2026 - 05:29 EUVD
26.4,15.7.5,14.8.4
CVE Published
Mar 25, 2026 - 00:32 nvd
MEDIUM 5.5

DescriptionCVE.org

This issue was addressed with improved handling of symlinks. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.4, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. An app may be able to access user-sensitive data.

Executive ViewAI

Why It Matters

Organizations using This should be aware of moderate risk from CVE-2026-20694 rated CVSS 5.5. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score
0.0%
Top 93% exploitable
Data Quality
4 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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