Actively exploited · Published Aug 21, 2025 · Assigned by apple

CVE-2025-43300

Critical 10.0 Exploited

In plain English

A critical-severity out-of-bounds write in iOS and iPadOS from Apple. Attackers are actively exploiting it in the wild (listed by CISA on August 21, 2025). The chance it is exploited in the next 30 days is estimated at 65.2% (higher than 99.3% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)65.2%top 0.7% of all CVEs

Exploited in the wildYesCISA KEV since Aug 21, 2025

Attack tooling1Public PoC

CISA guidance

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Federal agencies must remediate by Sep 11, 2025.

Official description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.

Affected products (as reported)

Vendor	Product	Versions
Apple	iOS and iPadOS	0 – before 15.8.50 – before 16.7.120 – before 18.6.2
Apple	iPadOS	0 – before 17.7.10
Apple	macOS	0 – before 13.7.80 – before 14.7.80 – before 15.6.1

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

In plain English

CISA guidance

Official description

Affected products (as reported)

References