What is the CVSS score of CVE-2026-28819?

CVE-2026-28819 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Is there a patch available for CVE-2026-28819?

Yes, a patch is available for CVE-2026-28819. Update the affected software to the latest version immediately.

Apple CVE-2026-28819

EUVD-2026-29215 MEDIUM

Out-of-bounds Write (CWE-787)

2026-05-11 apple

GHSA-5xgr-7873-hpc7

Apple Memory Corruption Buffer Overflow RCE

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVSS changed

May 12, 2026 - 18:22 NVD

5.4 (MEDIUM)

Patch available

May 11, 2026 - 22:03 EUVD

CVE Published

May 11, 2026 - 20:08 nvd

MEDIUM 5.4

CVE Published

May 11, 2026 - 20:08 nvd

UNKNOWN (no severity yet)

DescriptionCVE.org

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to execute arbitrary code with kernel privileges.