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Apple macOS EUVDEUVD-2026-77986

| CVE-2026-86911 MEDIUM
Improper Restriction of Rendered UI Layers or Frames (CWE-1021)
2026-09-14 apple GHSA-2835-9xqx-vv53
5.5
CVSS 3.1 · Vendor: apple
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Severity by source

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

Local malicious app (AV:L) needing no privileges (PR:N) but victim interaction with a secure prompt (UI:R); bypass grants unauthorized action approval (I:H) with no confidentiality or availability loss.

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

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

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

Lifecycle Timeline

7
Metadata Corrected
Sep 16, 2026 - 14:40 vuln.today
tag: macOS added
Metadata Corrected
Sep 16, 2026 - 14:40 vuln.today
tag: XSS removed
Analysis Generated
Sep 16, 2026 - 14:27 vuln.today
CVSS changed
Sep 16, 2026 - 14:22 NVD
5.5 (MEDIUM)
Patch available
Sep 14, 2026 - 22:19 EUVD
CVE Published
Sep 14, 2026 - 20:48 cve.org
MEDIUM 5.5
CVE Published
Sep 14, 2026 - 20:48 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

This issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27. A malicious app may be able to bypass clickjacking protections for secure prompts.

AnalysisAI

A malicious app already running locally on macOS versions prior to Golden Gate 27 can bypass the clickjacking protections that normally guard secure system prompts, allowing a user who interacts with a manipulated dialog to approve an action the operating system intended to require explicit, deliberate consent. Impact is limited to local integrity (C:N/I:H/A:N per CVSS:3.1/AV:L/AC:L/PR:N/UI:R) - no confidentiality or availability loss, and the attacker needs both prior app execution and victim interaction with the prompt. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
technique details hidden
Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires a malicious application to be installed and running locally on macOS prior to Golden Gate 27 (AV:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine but modest-priority local integrity issue, not a high-urgency remote flaw. … 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 Upgrade to macOS Golden Gate 27, the vendor-released patch, which Apple states corrects the issue through improved state management; the advisory at https://support.apple.com/en-us/149035 carries the update details and should be checked for the exact build for each supported hardware family. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-77986 vulnerability details – vuln.today

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