CVE-2026-84539

CRITICAL 9.8CVE-2026-84539 · Published 26/10/2026 · updated 04/11/2026

In short

CVE-2026-84539 is a CRITICAL (CVSS 9.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.52%, higher than 44.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Tahoe 26.7.2. An app may be able to cause unexpected system termination.

References

support.apple.com/en-us/149035 · Release Notes
support.apple.com/en-us/149522 · Release Notes

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