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VulnerabilityPublished Updated

CVE-2026-84586: Apple macOS · Information Exposure

Affects Apple macOSSource CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium : upgrade to 27 when convenient.

Data as of 29 Oct 2026, 19:15 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.15.5
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 27
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade macOS and watchOS to 27.

Affected software

ProductAffectedFixed in
ApplemacOSAffected
  • <27
Fixed in
  • 27
ApplewatchOSAffected
  • <27
Fixed in
  • 27

AI-suggested

Apply the official fix by upgrading to macOS Golden Gate 27 or later, where this vulnerability is addressed through improved state management. No additional mitigation steps are indicated by the vendor.

Description

CVE-2026-84586 is an information disclosure vulnerability in Apple macOS that could allow a malicious application to leak sensitive user information. The issue was addressed by improved state management and is fixed in macOS Golden Gate 27. The vulnerability has a medium severity rating with a CVSS score of 5.5.

References

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