CVE-2025-43520

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-43520
StatePUBLISHED
Assignerapple
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-12 21:15:56 UTC
Updated2026-04-03 14:28:03 UTC
DescriptionA memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write 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

EPSS: 0.004080000 probability, percentile 0.333060000 (date 2026-07-22)

CISA KEV: Listed on 2026-03-20; due 2026-04-03; ransomware use Unknown

Problem Types: CWE-120 | A malicious application may be able to cause unexpected system termination or write kernel memory | CWE-120 CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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

CISA Known Exploited Vulnerability

VendorApple
ProductMultiple Products
NameApple Multiple Products Classic Buffer Overflow Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Noteshttps://support.apple.com/en-us/125632 ; https://support.apple.com/en-us/125633 ; https://support.apple.com/en-us/125634 ; https://support.apple.com/en-us/125635 ; https://support.apple.com/en-us/125636 ; https://support.apple.com/en-us/125637 ; https://support.apple.com/en-us/125638 ; https://support.apple.com/en-us/125639 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43520

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Ipados All All All All
Operating System Apple Ipados 26.0 All All All
Operating System Apple Iphone Os All All All All
Operating System Apple Iphone Os 26.0 All All All
Operating System Apple Macos All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apple IOS And IPadOS affected 18.7.2 custom Not specified
CNA Apple IOS And IPadOS affected 26.1 custom Not specified
CNA Apple MacOS affected 14.8.2 custom Not specified
CNA Apple MacOS affected 15.7.2 custom Not specified
CNA Apple MacOS affected 26.1 custom Not specified
CNA Apple TvOS affected 26.1 custom Not specified
CNA Apple VisionOS affected 26.1 custom Not specified
CNA Apple WatchOS affected 26.1 custom Not specified

References

ReferenceSourceLinkTags
support.apple.com/en-us/125634 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125639 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125636 [email protected] support.apple.com Release Notes, Vendor Advisory
cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain 134c704f-9b21-4f2e-91b3-4a467353bcc0 cloud.google.com Technical Description
support.apple.com/en-us/125632 [email protected] support.apple.com Release Notes, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
support.apple.com/en-us/125633 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125637 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125638 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125635 [email protected] support.apple.com Release Notes, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

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