CVE-2026-20621

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Summary

CVECVE-2026-20621
StatePUBLISHED
Assignerapple
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-11 23:16:05 UTC
Updated2026-04-02 19:21:11 UTC
DescriptionThe issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo | CWE-119 | An app may be able to cause unexpected system termination or corrupt kernel memory | CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Ipados All All All All
Operating System Apple Iphone Os All All All All
Operating System Apple Macos All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apple IOS And IPadOS affected 18.7.5 custom Not specified
CNA Apple IOS And IPadOS affected 26.3 custom Not specified
CNA Apple MacOS affected 14.8.4 custom Not specified
CNA Apple MacOS affected 15.7.4 custom Not specified
CNA Apple MacOS affected 26.3 custom Not specified
CNA Apple VisionOS affected 26.3 custom Not specified

References

ReferenceSourceLinkTags
support.apple.com/en-us/126346 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/126350 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/126349 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/126348 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/126353 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/126347 [email protected] support.apple.com Release Notes, Vendor Advisory
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