How severe is CVE-2026-28820?

CVE-2026-28820 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-28820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28820?

CVE-2026-28820 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28820?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-28820 have an EU (EUVD) identifier?

Yes. CVE-2026-28820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15083.

When was CVE-2026-28820 published?

CVE-2026-28820 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-28820

CVE-2026-28820 is a medium-severity vulnerability in Apple Macos with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15083
Weakness: CWE-200
Affected product: Apple Macos
Published: 2026-03-25
Last modified: 2026-06-17

Description

This issue was addressed with improved checks. This issue is fixed in macOS Tahoe 26.4. An app may be able to access sensitive user data.

Frequently asked questions

What is CVE-2026-28820?: This issue was addressed with improved checks. This issue is fixed in macOS Tahoe 26.4. An app may be able to access sensitive user data.
How severe is CVE-2026-28820?: CVE-2026-28820 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-28820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28820?: CVE-2026-28820 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28820?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28820 have an EU (EUVD) identifier?: Yes. CVE-2026-28820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15083.
When was CVE-2026-28820 published?: CVE-2026-28820 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:*:*:*:*:*:*:*:*

More vulnerabilities in Apple Macos

CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-44148 — Critical (CVSS 10.0): This issue was addressed with improved validation of file attributes. This issue is fixed in macOS Sequoia 15. An app…
CVE-2024-44146 — Critical (CVSS 10.0): A logic issue was addressed with improved file handling. This issue is fixed in macOS Sequoia 15. An app may be able to…
CVE-2023-40455 — Critical (CVSS 10.0): A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sonoma 14. A sandboxed…

All CVEs affecting Apple Macos →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →