CVE-2026-20620

HIGH
2026-02-11 [email protected]
7.7
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 11, 2026 - 23:16 nvd
HIGH 7.7

Tags

Apple Buffer Overflow Information Disclosure

Description

An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.4, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An attacker may be able to cause unexpected system termination or read kernel memory.

Analysis

Local attackers can exploit an out-of-bounds read vulnerability in macOS and Linux systems to crash the kernel or leak sensitive kernel memory, affecting macOS Sequoia 15.7.3 and earlier, macOS Tahoe 26.2 and earlier, and macOS Sonoma 14.8.3 and earlier. The vulnerability requires local access but no special privileges or user interaction to trigger. …

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Remediation

Within 24 hours: Inventory all macOS systems running Sequoia, Tahoe, or Sonoma versions and assess user populations. Within 7 days: Develop a phased patching plan prioritizing systems with elevated privileges or sensitive data access; communicate patch timeline to stakeholders. …

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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: 0

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CVE-2026-20620 vulnerability details – vuln.today
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