What is the CVSS score of CVE-2026-20654?

CVE-2026-20654 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Apple are affected by CVE-2026-20654?

Organizations using The should be aware of moderate risk from CVE-2026-20654, a buffer overflow vulnerability rated CVSS 5.5. Exploitation could cause memory corruption or application crashes.

How to fix or mitigate CVE-2026-20654?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Apple CVE-2026-20654

MEDIUM

Buffer Overflow (CWE-119)

2026-02-11 product-security@apple.com

Apple Buffer Overflow

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 11, 2026 - 23:16 nvd

MEDIUM 5.5

DescriptionCVE.org

The issue was addressed with improved memory handling. This issue is fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to cause unexpected system termination.

AnalysisAI

A local privilege escalation vulnerability in Apple's operating systems (macOS, iOS, visionOS, and iPadOS) allows authenticated users to trigger a buffer overflow condition resulting in denial of service through application crashes. The vulnerability stems from improper memory handling and affects multiple Apple platforms including watchOS and tvOS. Currently, no patch is available, though the vendor has indicated fixes will be included in upcoming OS updates.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Ipados. The issue was addressed with improved memory handling. This issue is fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to cause unexpected system termination.