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Apple macOS CVE-2026-84506

| EUVDEUVD-2026-78051 HIGH
Use After Free (CWE-416)
2026-09-14 apple GHSA-79hg-9f4v-qprr
7.8
CVSS 3.1 · Vendor: apple
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Severity by source

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

Attacker needs to run a local app (PR:L, AV:L); memory corruption in the kernel is reliable once triggered (AC:L) with full C/I/A impact.

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

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

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

Lifecycle Timeline

5
Analysis Generated
Sep 15, 2026 - 14:22 vuln.today
CVSS changed
Sep 15, 2026 - 14:22 NVD
7.8 (HIGH)
Patch available
Sep 14, 2026 - 22:19 EUVD
CVE Published
Sep 14, 2026 - 20:49 cve.org
HIGH 7.8
CVE Published
Sep 14, 2026 - 20:49 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to execute arbitrary code with kernel privileges.

AnalysisAI

A use-after-free in Apple macOS kernel memory management allows a locally installed and executed app to escalate to kernel privileges and run arbitrary code with full system control. Affected releases are macOS before Sequoia 15.8, before Tahoe 26.7, and before Golden Gate 27; Apple shipped fixes in all three branches. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the ability to run a local application on an unpatched macOS system - that is, the attacker must first achieve user-level code execution on the host, and the malicious app must then be launched by the user (this is the 'UI:N' after-launch case, since no further interaction beyond opening the app is needed). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) describes a low-complexity, no-user-interaction-after-launch, local attack that an ordinary logged-in user process can mount - the required prerequisite is simply the ability to run code on the machine, which is exactly what a phishing-delivered app or a compromised user account provides. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor patch: upgrade to macOS Sequoia 15.8, macOS Tahoe 26.7, or macOS Golden Gate 27 as applicable to the device, per the Apple advisories at https://support.apple.com/en-us/149035, https://support.apple.com/en-us/149042, and https://support.apple.com/en-us/149043. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-84506 vulnerability details – vuln.today

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