Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-43520

CVE-2025-43520MEDIUM

Apple Multiple Products

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0043   34.7   YES

AFFECTED
  Product         Versions     Fixed
  iOS and iPadOS  unspecified  —
  macOS           unspecified  —
  tvOS            unspecified  —
  visionOS        unspecified  —
  watchOS         unspecified  —

TIMELINE
  Apr 16  Reserved by apple
  Dec 12  Published (CNA: apple)
  Mar 20  Added to CISA KEV, remediation due 2026-04-03

CWE-120 · CNA: apple · CVSS v3.1 · 10 references · NVD status: Analyzed · KEV due April 3, 2026

Description

A 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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 16, 2025	Reserved	Reserved by apple
December 12, 2025	Published	Published (CNA: apple)
March 20, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-04-03

Affected

Affected products and packages — 5 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Apple	iOS and iPadOS	—	—	—
Apple	macOS	—	—	—
Apple	tvOS	—	—	—
Apple	visionOS	—	—	—
Apple	watchOS	—	—	—

Weaknesses

CWE-120

References (10)

https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/ [Technical Description]
https://support.apple.com/en-us/125632 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125633 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125634 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125635 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125636 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125637 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125638 [Release Notes, Vendor Advisory]
https://support.apple.com/en-us/125639 [Release Notes, Vendor Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520 [US Government Resource]

Authoritative record: CVE-2025-43520 at cve.org

Vendors: apple

Weaknesses: CWE-120

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-43520 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.