How severe is CVE-2026-28976?

CVE-2026-28976 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-28976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28976?

CVE-2026-28976 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28976?

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-2026-28976 have an EU (EUVD) identifier?

Yes. CVE-2026-28976 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29275.

When was CVE-2026-28976 published?

CVE-2026-28976 was published on 2026-05-11 and last updated on 2026-06-17.

CVE-2026-28976

CVE-2026-28976 is a high-severity vulnerability in Apple Macos with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29275
Weakness: CWE-200
Affected product: Apple Macos
Published: 2026-05-11
Last modified: 2026-06-17

Description

An information leakage was addressed with additional validation. This issue is fixed in macOS Tahoe 26.5. An app may be able to gain root privileges.

Frequently asked questions

What is CVE-2026-28976?: An information leakage was addressed with additional validation. This issue is fixed in macOS Tahoe 26.5. An app may be able to gain root privileges.
How severe is CVE-2026-28976?: CVE-2026-28976 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-28976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28976?: CVE-2026-28976 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28976?: 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-2026-28976 have an EU (EUVD) identifier?: Yes. CVE-2026-28976 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29275.
When was CVE-2026-28976 published?: CVE-2026-28976 was published on 2026-05-11 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/127115

Affected products (1)

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

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