CVE-2025-43209
published 2025-07-30CVE-2025-43209: 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…
PriorityP347critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.88%
55.4th percentile
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
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_18.6_and_ipados | — | — |
| apple | ios_and_ipados | < 18.6 | 18.6 |
| apple | ipados | < 17.7.9 | 17.7.9 |
| apple | ipados | — | — |
| apple | ipados | >= 18.0 < 18.6 | 18.6 |
| apple | iphone_os | < 18.6 | 18.6 |
| apple | macos | < 14.7.7 | 14.7.7 |
| apple | macos | < 15.6 | 15.6 |
| apple | macos | < 13.7.7 | 13.7.7 |
| apple | macos | >= 14.0 < 14.7.7 | 14.7.7 |
| apple | macos | >= 15.0 < 15.6 | 15.6 |
| apple | macos_sequoia | — | — |
| apple | macos_sonoma | — | — |
| apple | macos_ventura | — | — |
| apple | tvos | < 18.6 | 18.6 |
| apple | tvos | — | — |
| apple | visionos | < 2.6 | 2.6 |
| apple | visionos | — | — |
| apple | watchos | < 11.6 | 11.6 |
| apple | watchos | — | — |
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Apple
CVE-2025-43209: macOS Sequoia 15.6
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: macOS Sequoia 15.6
Apple Security Update: About the security content of macOS Sequoia 15.6
Product: macOS Sequoia
Version: 15.6
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: visionOS 2.6
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: visionOS 2.6
Apple Security Update: About the security content of visionOS 2.6
Product: visionOS
Version: 2.6
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: tvOS 18.6
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: tvOS 18.6
Apple Security Update: About the security content of tvOS 18.6
Product: tvOS
Version: 18.6
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: watchOS 11.6
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: watchOS 11.6
Apple Security Update: About the security content of watchOS 11.6
Product: watchOS
Version: 11.6
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: iOS 18.6 and iPadOS 18.6
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: iOS 18.6 and iPadOS 18.6
Apple Security Update: About the security content of iOS 18.6 and iPadOS 18.6
Product: iOS 18.6 and iPadOS
Version: 18.6
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: macOS Sonoma 14.7.7
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: macOS Sonoma 14.7.7
Apple Security Update: About the security content of macOS Sonoma 14.7.7
Product: macOS Sonoma
Version: 14.7.7
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: iPadOS 17.7.9
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: iPadOS 17.7.9
Apple Security Update: About the security content of iPadOS 17.7.9
Product: iPadOS
Version: 17.7.9
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
Apple
CVE-2025-43209: macOS Ventura 13.7.7
vendor_apple·2025-07-29·CVSS 9.8
CVE-2025-43209 [CRITICAL] CVE-2025-43209: macOS Ventura 13.7.7
Apple Security Update: About the security content of macOS Ventura 13.7.7
Product: macOS Ventura
Version: 13.7.7
CVE: CVE-2025-43209
Component: ICU
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: An out-of-bounds access issue was addressed with improved bounds checking.
GHSA
GHSA-fjxj-4w75-9x8h: An out-of-bounds access issue was addressed with improved bounds checking
ghsa_unreviewed·2025-07-30
CVE-2025-43209 [CRITICAL] CWE-787 GHSA-fjxj-4w75-9x8h: An out-of-bounds access issue was addressed with improved bounds checking
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6, iPadOS 17.7.9, iOS 18.6 and iPadOS 18.6, tvOS 18.6, macOS Sonoma 14.7.7, watchOS 11.6, visionOS 2.6, macOS Ventura 13.7.7. Processing maliciously crafted web content may lead to an unexpected Safari crash.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://support.apple.com/en-us/124147https://support.apple.com/en-us/124148https://support.apple.com/en-us/124149https://support.apple.com/en-us/124150https://support.apple.com/en-us/124151https://support.apple.com/en-us/124153https://support.apple.com/en-us/124154https://support.apple.com/en-us/124155http://seclists.org/fulldisclosure/2025/Jul/31http://seclists.org/fulldisclosure/2025/Jul/32http://seclists.org/fulldisclosure/2025/Jul/33http://seclists.org/fulldisclosure/2025/Jul/34http://seclists.org/fulldisclosure/2025/Jul/36http://seclists.org/fulldisclosure/2025/Jul/37
2025-07-30
Published