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Apple macOS CVE-2026-112708

| EUVDEUVD-2026-110415 MEDIUM
Race Condition (CWE-362)
2026-10-26 apple GHSA-wh8c-j4fq-prpg
5.3
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
    Gain low-privilege local code execution on macOS
  2. Exploit
    Launch app exercising vulnerable code path
  3. Execution
    Win race-condition timing window via concurrent operations
  4. Impact
    Cause system termination or corrupt process memory

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Concurrency control, locking
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Exploitation Conditions

Requires the attacker to already run code via an app on the target macOS system (AV:L, PR:L, UI:N) - there is no remote or network-reachable vector. Because the flaw is a race condition (CWE-362), exploitation depends on winning a timing window, reflected in AC:H and the SSVC 'Automatable: no' rating, so success is non-deterministic rather than guaranteed. Limiting factors: local low-privilege code execution is a prerequisite, the impact is bounded to a single process's memory corruption or an unexpected system termination (availability), and no confidentiality boundary is crossed. Applies to macOS versions below 27.2 (Golden Gate), 15.8.2 (Sequoia), and 26.7.2 (Tahoe).

Impact

This is a medium-severity local issue (CVSS 5.3) whose signals are internally consistent and point to low real-world urgency. The CVSS vector requires local access (AV:L), high attack complexity (AC:H, consistent with the CWE-362 race condition that must win a timing window), and existing low privileges (PR:L) - i.e. the attacker must already be able to run code/an app on the target macOS host. Exploitation signals reinforce low priority: EPSS is 0.15% (4th percentile), SSVC reports Exploitation: none, Automatable: no, and Technical Impact: partial, there is no CISA KEV listing, and no public exploit was identified. The impact is limited to availability (A:H, system termination) and partial integrity (I:L, process-memory corruption) with no confidentiality impact (C:N). Note a conflict in the input metadata: the 'Information Disclosure' tag contradicts both the CVSS vector (C:N, no confidentiality impact) and the description, which describes a crash/memory-corruption condition rather than data exposure - treat the information-disclosure framing as unverified. The vuln.today 'this_month' decision label aligns with this picture: patch in a normal cycle, not an emergency.

Exploit ScenarioDerived

A malicious or compromised application already running on a macOS machine repeatedly exercises the vulnerable code path, attempting to win the race-condition timing window described by CWE-362. On a successful race it corrupts process memory or triggers unexpected system termination (denial of service). No public exploit code has been identified, and the high attack complexity means success is not reliable on any single attempt.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 28, 2026

An app already running on an affected Mac can win a race condition to corrupt process memory or cause unexpected system termination; Apple corrected the locking defect in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, and macOS Tahoe 26.7.2. Reachability is local only (CVSS 5.3, AV:L/AC:H/PR:L/UI:N), so an attacker needs existing low-privilege code execution on the host and must then win a timing window, making success non-deterministic and matching the SSVC 'Automatable: no' rating. No public exploit code or active exploitation has been identified at time of analysis, and EPSS is 0.15% (4th percentile), which supports scheduling the update in the current monthly cycle rather than treating it as an emergency.

RemediationAI

Apple fixed CVE-2026-112708 with improved locking in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, and macOS Tahoe 26.7.2, with the three advisory pages at support.apple.com/en-us/149521, /149522, and /149523 corresponding to those releases; update the branch in use to its listed fixed version. The vendor documents no separate workaround for this issue - the advisory describes only the locking change, so there is no feature toggle, entitlement, or configuration setting to disable as a compensating control, and updating is the only complete fix. Where an immediate upgrade is not possible, exposure remains limited to code that is already executing locally on the host, which is consistent with the 'this_month' priority, the EPSS score of 0.15%, and the absence of KEV or public exploit reporting; validate the installed build against the fixed version for each branch rather than relying on the marketing name.

Affected VersionsENISA

macOS 0 <27.2
macOS 0 <15.8.2
macOS 0 <26.7.2

Affected Packages

euvd macos fix: 15.8.2, 26.7.2, 27.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

CWE-362 (concurrent execution using a shared resource with improper synchronization) is the root-cause class, and Apple's advisory states the issue was 'addressed with improved locking' - a shared resource was reachable from more than one execution context without adequate serialization, and the correction adds locking rather than removing functionality. Apple does not name the specific subsystem, kernel extension, or service involved, so which shared structure is raced is not described in the available sources. The CPE entry cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:* is a wildcard across the macOS product line, while EUVD resolves the affected ranges to macOS below 27.2, below 15.8.2, and below 26.7.2 - one range per supported branch. The assessed vector AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H describes severity rather than mechanism: it confirms a local attack surface with low privileges and no user interaction, records high attack complexity consistent with a timing window that must be won and with the SSVC 'Automatable: no' rating, and bounds impact to integrity:low plus availability:high with confidentiality:none - the outcome is process memory corruption or system termination, not data disclosure. The 'Information Disclosure' tag present in the source data is not corroborated by the assessed C:N rating and should not be used to describe impact.

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Severity by source

Vendor (apple) PRIMARY 5.3 MEDIUM
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
vuln.today AI 5.3 MEDIUM

Local app access needed (AV:L, PR:L); the race condition requires winning a timing window (AC:H); no data exposure (C:N); partial integrity from memory corruption (I:L) and crash gives A:H.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
4.0 AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

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

Lifecycle Timeline

4
CVSS changed
Oct 27, 2026 - 01:24 NVD
5.3 (MEDIUM)
Patch available
Oct 26, 2026 - 21:03 EUVD
CVE Published
Oct 26, 2026 - 20:43 cve.org
MEDIUM 5.3
CVE Published
Oct 26, 2026 - 20:43 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

A race condition was addressed with improved locking. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An app may be able to cause unexpected system termination or corrupt process memory.

Threat Intelligence Overview

EPSS Score
0.2%
Top 96% exploitable
Prevalence
High
macOS is a widely deployed desktop/laptop OS across consumer and enterprise fleets
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 0.2%
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

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
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.

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).

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