What is the CVSS score of CVE-2026-43694?

CVE-2026-43694 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 CVE-2026-43694?

Yes, a patch is available for CVE-2026-43694. Update the affected software to the latest version immediately.

Apple CVE-2026-43694

EUVD-2026-49521 CRITICAL

Buffer Overflow (CWE-119)

2026-07-27 apple

GHSA-74f7-fh52-5359

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 - 15:25 vuln.today

CVSS changed

Jul 28, 2026 - 15:22 NVD

9.8 (CRITICAL)

Patch available

Jul 27, 2026 - 21:17 EUVD

CVE Published

Jul 27, 2026 - 20:13 cve.org

UNKNOWN (no severity yet)

CVE Published

Jul 27, 2026 - 20:13 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 write kernel memory.

AnalysisAI

Memory corruption in macOS allows a malicious app to write kernel memory or cause unexpected system termination. Affected versions include macOS Sequoia prior to 15.7.8, macOS Sonoma prior to 14.8.8, and macOS Tahoe prior to 26.6. Successful exploitation could lead to complete system compromise with kernel-level privileges, though no active exploitation or public exploit code has been identified and EPSS indicates a low probability (0.16%) of widespread attacks.