Vulnerability · Published Sep 14, 2026 · Assigned by apple
CVE-2026-84558
Medium 5.5
In plain English
A medium-severity double free in macOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 95.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A double free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27. An app may be able to cause unexpected system termination.
Affected products (as reported)
Weakness: CWE-415 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H