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Watchos CVE-2026-86904

| EUVDEUVD-2026-78099 HIGH
Exposure of Private Personal Information to an Unauthorized Actor (CWE-359)
2026-09-14 apple GHSA-pq85-2h7r-6gj3
7.5
CVSS 3.1 · Vendor: apple
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection PII protection
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

Improper state management in Apple iOS, iPadOS, and watchOS allows an installed app to track a user across other apps and websites without the user's permission, effectively defeating the platform's cross-app tracking consent controls. The flaw affects iOS/iPadOS releases before 26.7 and before 27, plus watchOS before 27, and is remediated by the iOS 26.7/iPadOS 26.7, iOS 27/iPadOS 27, and watchOS 27 updates. Exploitation requires a hostile app on the device rather than remote network access; EPSS is 0.15% (5th percentile), there is no CISA KEV listing or public exploit identified, and SSVC rates exploitation as 'none' with partial technical impact.

Affected VersionsENISA

iOS and iPadOS 0 <27
watchOS 0 <27
iOS and iPadOS 0 <26.7

Affected Packages

euvd ios_and_ipados fix: 26.7, 27
euvd watchos fix: 27

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in euvd

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (apple) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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

CVSS VectorVendor: apple

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

Lifecycle Timeline

4
CVSS changed
Sep 15, 2026 - 19:22 NVD
7.5 (None) 7.5 (HIGH)
Patch available
Sep 14, 2026 - 22:19 EUVD
CVE Published
Sep 14, 2026 - 20:51 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 14, 2026 - 20:51 cve.org
HIGH 7.5

DescriptionCVE.org

A privacy issue was addressed with improved state management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, watchOS 27. An app may be able to track users across apps and websites without permission.

Threat Intelligence Overview

EPSS Score
0.1%
Top 95% 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 HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
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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