What’s Vulnerable › Vulnerabilities

CVE-2025-43209

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-30 · updated 2026-06-17
• Weakness: CWE-787

Description

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Affected products

• Apple iPadOS: before 17.7.9; from 18.0 before 18.6 — fixed in 17.7.9, 18.6
• Apple Iphone Os: before 18.6 — fixed in 18.6
• Apple macOS: before 13.7.7; from 14.0 before 14.7.7; from 15.0 before 15.6 — fixed in 13.7.7, 14.7.7, 15.6
• Apple tvOS: before 18.6 — fixed in 18.6
• Apple visionOS: before 2.6 — fixed in 2.6
• Apple watchOS: before 11.6 — fixed in 11.6

How to fix

Upgrade to a fixed version: Apple iPadOS 17.7.9, 18.6; Apple Iphone Os 18.6; Apple macOS 13.7.7, 14.7.7, 15.6; Apple tvOS 18.6; Apple visionOS 2.6; Apple watchOS 11.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/124147
• https://support.apple.com/en-us/124148
• https://support.apple.com/en-us/124149
• https://support.apple.com/en-us/124150
• https://support.apple.com/en-us/124151
• https://support.apple.com/en-us/124153
• https://support.apple.com/en-us/124154
• https://support.apple.com/en-us/124155
• http://seclists.org/fulldisclosure/2025/Jul/31
• http://seclists.org/fulldisclosure/2025/Jul/32
• http://seclists.org/fulldisclosure/2025/Jul/33
• http://seclists.org/fulldisclosure/2025/Jul/34

Get alerted when CVE-2025-43209 or the next vulnerability affects your stack