CVE-2026-20652

HIGH

Safari < 26.3 - Denial of Service via Uncontrolled Resource Consumption

Title source: llm

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. A remote attacker may be able to cause a denial-of-service.

References (5)

Core 5

Core References

Release Notes, Vendor Advisory

https://support.apple.com/en-us/126346

Release Notes, Vendor Advisory

https://support.apple.com/en-us/126347

Release Notes, Vendor Advisory

https://support.apple.com/en-us/126348

Release Notes, Vendor Advisory

https://support.apple.com/en-us/126353

Release Notes, Vendor Advisory

https://support.apple.com/en-us/126354

Scores

CVSS v3 7.5

EPSS 0.0044

EPSS Percentile 34.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (10)

Apple/iOS and iPadOS < 18.7.5

Apple/iOS and iPadOS < 26.3

apple/ipados < 18.7.5

apple/iphone_os < 18.7.5

apple/macos < 26.3

Apple/macOS < 26.3

apple/safari < 26.3

Apple/Safari < 26.3

apple/visionos < 26.3

Apple/visionOS < 26.3

Published Feb 11, 2026

Tracked Since Feb 18, 2026