CVE-2026-20631

CVE-2026-20631 is a high-severity vulnerability in Apple Macos with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

A logic issue was addressed with improved checks. This issue is fixed in macOS Tahoe 26.4. A user may be able to elevate privileges.

Frequently asked questions

What is CVE-2026-20631?
A logic issue was addressed with improved checks. This issue is fixed in macOS Tahoe 26.4. A user may be able to elevate privileges.
How severe is CVE-2026-20631?
CVE-2026-20631 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-20631 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20631?
CVE-2026-20631 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20631?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-20631 have an EU (EUVD) identifier?
Yes. CVE-2026-20631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15039.
When was CVE-2026-20631 published?
CVE-2026-20631 was published on 2026-03-25 and last updated on 2026-06-17.

References

Affected products (1)

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