Where
-Infinity
0
Severity
4

Security Vulnerabilities fixed in Firefox for iOS 155.0

First published (updated )
Advisory
MFSA2026-81
Severity
5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content.

1 / 2
Source: Mozilla
First published (updated )
Severity
7
Use After Free

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected process termination.

First published (updated )
First published (updated )
Advisory
APPLE-126793
First published (updated )
Severity
4.3
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

A memory corruption issue was addressed with improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

1 / 77
Source: NVD
First published (updated )
Severity
4.3
Input Validation, Integer Overflow, Use After Free, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 74
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Integer Overflow, Use After Free, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Integer Overflow, Use After Free, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Use After Free, Integer Overflow, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Use After Free, Integer Overflow, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Use After Free, Integer Overflow, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Use After Free, Integer Overflow, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
3.1
Race Condition, Use After Free, Input Validation, Integer Overflow, Buffer Overflow
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

1 / 77
Source: NVD
First published (updated )
Severity
5.4
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
6.5
Use After Free, Input Validation, Integer Overflow, Buffer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected process crash.

1 / 77
Source: NVD
First published (updated )
Severity
4.3
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 77
Source: Apple
First published (updated )
Severity
8.8
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to memory corruption.

1 / 78
Source: NVD
First published (updated )
Severity
6.5
Input Validation, Integer Overflow, Use After Free, Buffer Overflow, Race Condition, Infoleak
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Accessibility. This issue was addressed through improved state management.

1 / 83
Source: Apple
First published (updated )
Severity
3.1
Race Condition, Use After Free, Input Validation, Integer Overflow, Buffer Overflow
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

1 / 85
Source: NVD
First published (updated )
Severity
6.5
Use After Free, Input Validation, Integer Overflow
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected process termination.

1 / 18
Source: NVD
First published (updated )
Severity
5.5
Buffer Overflow, Race Condition, Input Validation, Integer Overflow, Infoleak
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Accessibility. This issue was addressed through improved state management.

1 / 31
Source: Apple
First published (updated )
Severity
4.3
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 70
Source: Apple
First published (updated )
Severity
4.3
Buffer Overflow, Use After Free, Input Validation, Integer Overflow, Race Condition
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Accessibility. This issue was addressed through improved state management.

1 / 70
Source: Apple
First published (updated )
Severity
7.5
Use After Free, Input Validation, Integer Overflow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. A remote attacker may be able to cause unexpected system termination.

1 / 6
Source: MITRE
First published (updated )
Severity
6.6
Input Validation, Integer Overflow, Use After Free
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. An app may be able to cause unexpected system termination or read kernel memory.

1 / 7
Source: MITRE
First published (updated )
Severity
6.5
Input Validation, Integer Overflow, Use After Free, Buffer Overflow
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Audio. A logic issue was addressed with improved checks.

1 / 8
Source: Apple
First published (updated )
Severity
4.3
Input Validation, Integer Overflow, Use After Free
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Audio. A logic issue was addressed with improved checks.

1 / 14
Source: Apple
First published (updated )

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