CVE-2026-84579 | BDVDB-2026-391939 Detail

ApplemacOS

Description#

A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Opening a file referencing a network share may lead to unexpected software execution.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-703 Improper Check or Handling of Exceptional Conditions

References#

Exploit#

No public exploit known

History#

Version 12026-10-20Record published in the CVE List.
Version 22026-11-02Most recent update recorded in the CVE List.

Published

Published: 2026-10-20
Last modified: 2026-11-02

Vendor information

Vendor: Apple
Product: macOS

All Apple vulnerabilities

Score

8.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 46.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 15.8
Fixed
15.8
Vulnerable
< 26.7
Fixed
26.7
Vulnerable
< 27
Fixed
27

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.8 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).