CVE-2026-20621

MEDIUM
2026-02-11 [email protected]
5.5
CVSS 3.1
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CVSS Vector

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

2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 11, 2026 - 23:16 nvd
MEDIUM 5.5

Tags

Apple Buffer Overflow

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.

Analysis

Improper memory handling in Apple operating systems (macOS, iOS, iPadOS, visionOS) allows local attackers with user-level privileges to trigger kernel memory corruption or unexpected system crashes without user interaction. The vulnerability affects multiple macOS versions (Tahoe 26.3, Sonoma 14.8.4, Sequoia 15.7.4) and iOS/iPadOS 18.7.5 and later. …

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Remediation

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

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Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +28
POC: 0

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CVE-2026-20621 vulnerability details – vuln.today
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