How severe is CVE-2026-28842?

CVE-2026-28842 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-2026-28842 being actively exploited?

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

What products are affected by CVE-2026-28842?

CVE-2026-28842 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28842?

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-2026-28842 have an EU (EUVD) identifier?

Yes. CVE-2026-28842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15117.

When was CVE-2026-28842 published?

CVE-2026-28842 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-28842

CVE-2026-28842 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-122.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15117
Weakness: CWE-122
Affected product: Apple Macos
Published: 2026-03-25
Last modified: 2026-06-17

Description

The issue was addressed with improved bounds checks. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.

Frequently asked questions

What is CVE-2026-28842?: The issue was addressed with improved bounds checks. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.
How severe is CVE-2026-28842?: CVE-2026-28842 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-2026-28842 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28842?: CVE-2026-28842 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28842?: 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-2026-28842 have an EU (EUVD) identifier?: Yes. CVE-2026-28842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15117.
When was CVE-2026-28842 published?: CVE-2026-28842 was published on 2026-03-25 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/126794

Affected products (1)

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

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