What is the CVSS score of EUVD-2026-49428?

EUVD-2026-49428 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Is there a patch available for EUVD-2026-49428?

Yes, a patch is available for EUVD-2026-49428. Update the affected software to the latest version immediately.

Apple EUVD-2026-49428

| CVE-2026-64697 CRITICAL

Buffer Overflow (CWE-119)

2026-07-27 apple

GHSA-pjv3-r5fj-hxqj

Buffer Overflow Apple

9.8

CVSS 3.1 · Vendor: apple

Severity by source

Vendor (apple) PRIMARY

9.8 CRITICAL

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

Primary rating from Vendor (apple) · only source for this CVE.

CVSS VectorVendor: apple

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jul 28, 2026 - 19:06 vuln.today

CVSS changed

Jul 28, 2026 - 14:37 NVD

9.8 (None) 9.8 (CRITICAL)

Patch available

Jul 27, 2026 - 21:17 EUVD

CVE Published

Jul 27, 2026 - 20:14 cve.org

UNKNOWN (no severity yet)

CVE Published

Jul 27, 2026 - 20:14 cve.org

CRITICAL 9.8

DescriptionCVE.org

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination or corrupt kernel memory.

AnalysisAI

Memory corruption in macOS prior to Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6 allows a local app to cause unexpected system termination or corrupt kernel memory. Despite a CVSS score of 9.8, the attack vector is local and no public exploit or active exploitation has been identified; EPSS estimates exploitation probability at 0.16%, and CISA SSVC confirms no current exploitation but notes the issue is automatable with total technical impact.