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No exploitation reportedFix available

CVE-2026-84545

Use-After-Free Enables Sandbox Escape to Root

No exploitation reported by the sources we read.

  • Published2026-10-26
  • Fixed in26.7.2 · 15.8.2
  • WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An app with App Sandbox restrictions may be able to escape the sandbox and execute code with root privileges.

Timeline

dates in UTC
  1. 2026-10-2620:41CVE publishedCNA

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-84545?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-84545?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Apple macos
BranchAffectedFixed in
26.x≥ 26.0, < 26.7.226.7.2
15.8< 15.8.215.8.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apple macOS
    Affected
    • < 15.8.2fixed in 15.8.2custom
    • < 26.7.2fixed in 26.7.2custom
    • < 27fixed in 27custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-26

Fix

  1. Update Apple macos to 26.7.2 · 15.8.2

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2026-10-26
Last Modified
2026-11-03
NVD status
Analyzed
GitHub Advisory
GHSA-m9m3-jw4r-v83v

Frequently asked questions

What is CVE-2026-84545?

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An app with App Sandbox restrictions may be able to escape the sandbox and execute code with root privileges.

Is CVE-2026-84545 actively exploited?

Active exploitation of CVE-2026-84545 has not been confirmed. Its EPSS score was 0.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84545?

CVE-2026-84545 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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