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VulnerabilityPublished Updated

CVE-2026-84567: The issue was addressed with improved memory handling

Source GCVE Database

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Authoritative record:CVE-2026-84567· Medium 5.5

Not known to be exploited · CVSS 5.5 Medium · fixed in 27 : update macOS when convenient.

Data as of 30 Oct 2026, 06:59 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 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 27, 26.7, 15.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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 to 27, 26.7 or 15.8.

Affected software

ProductAffectedFixed in
ApplemacOSAffected
  • <27
Fixed in
  • 27
ApplemacOSAffected
  • <26.7
Fixed in
  • 26.7
ApplemacOSAffected
  • <15.8
Fixed in
  • 15.8

AI-suggested

Apply the official fixes by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7. These versions include improved memory handling that addresses the vulnerability.

Description

A vulnerability in macOS could allow an application to cause unexpected system termination due to improper memory handling. This issue has been addressed with improved memory management and fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.

References

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