How severe is CVE-2026-28848?

CVE-2026-28848 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 none, integrity none, and availability high.

Is CVE-2026-28848 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28848?

CVE-2026-28848 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28848?

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-2026-28848 have an EU (EUVD) identifier?

Yes. CVE-2026-28848 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29220.

When was CVE-2026-28848 published?

CVE-2026-28848 was published on 2026-05-11 and last updated on 2026-06-17.

CVE-2026-28848

CVE-2026-28848 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29220
Weakness: CWE-121
Affected product: Apple Macos
Published: 2026-05-11
Last modified: 2026-06-17

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.7, macOS Tahoe 26.5. A remote attacker may be able to cause unexpected system termination.

Frequently asked questions

What is CVE-2026-28848?: A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.7, macOS Tahoe 26.5. A remote attacker may be able to cause unexpected system termination.
How severe is CVE-2026-28848?: CVE-2026-28848 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 none, integrity none, and availability high.
Is CVE-2026-28848 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28848?: CVE-2026-28848 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28848?: 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-2026-28848 have an EU (EUVD) identifier?: Yes. CVE-2026-28848 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29220.
When was CVE-2026-28848 published?: CVE-2026-28848 was published on 2026-05-11 and last updated on 2026-06-17.

References

Affected products (1)

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

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