Medium 5.5Known exploited (CISA KEV)Published Dec 12, 2025

CVE-2025-43520A memory corruption issue was addressed with improved memory handling.

Updated under an hour ago (Oct 26, 2026, 7:40 PM ET)

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It affects Apple iOS and iPadOS and 6 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Mar 20, 2026; federal agencies had to remediate by Apr 3, 2026. Treat that date as your deadline.

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Every CVE for Apple iOS and iPadOS

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-120
Known exploited: Added to CISA KEV Mar 20, 2026; federal remediation due Apr 3, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 0.43% (percentile 37)
Assigned by: apple
NVD analysis: Analyzed
Record last updated: Sep 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apple iOS and iPadOS apple:ios_and_ipados (from the name)	before 18.7.2; before 26.1	CNA record
Apple macOS apple:macos (from the name)	before 14.8.2; before 15.7.2; before 26.1	CNA record
Apple tvOS apple:tvos (from the name)	before 26.1	CNA record
Apple visionOS apple:visionos (from the name)	before 26.1	CNA record
Apple watchOS apple:watchos (from the name)	before 26.1	CNA record
apple ipados apple:ipados	before 18.7.2; 26.0	NVD
apple iphone_os apple:iphone_os	before 18.7.2; 26.0	NVD
apple macos apple:macos	from 14.0 before 14.8.2; from 15.0 before 15.7.2; 26.0	NVD
apple tvos apple:tvos	before 26.1	NVD
apple visionos apple:visionos	before 26.1	NVD
1–10 of 11

References

References

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://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/	technical-description
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.