SB2026081784 - Multiple vulnerabilities in Apple Safari

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Main Vulnerability Database SB2026081784

SB2026081784 - Multiple vulnerabilities in Apple Safari

Published: August 17, 2026

Security Bulletin ID SB2026081784
CSH Severity
High
Patch available
YES
Number of vulnerabilities 31
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 6% Medium 55% Low 39%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 31 vulnerabilities.


1) Memory corruption (CVE-ID: CVE-2026-43712)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


2) Use after free (CVE-ID: CVE-2026-43746)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebRTC. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


3) Improper access control (CVE-ID: CVE-2026-43700)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 2.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in WebKit when rendering content. A local user can trigger processing of crafted content to disclose sensitive information.


4) Improper input validation (CVE-ID: CVE-2026-43735)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:/VI:/VA:/SC:N/SI:N/SA:N]



5) Use after free (CVE-ID: CVE-2026-43734)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


6) Use after free (CVE-ID: CVE-2026-43726)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


7) Use after free (CVE-ID: CVE-2026-43709)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


8) Use after free (CVE-ID: CVE-2026-43699)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


9) Use after free (CVE-ID: CVE-2026-43742)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


10) Improper limitation of a pathname to a restricted directory ('path traversal') (CVE-ID: CVE-2026-43732)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to incorrect handling of path names in WebKit. A local user can trick the victim into opening a specially crafted file and gain access to sensitive information.


11) Use-after-free (CVE-ID: CVE-2026-43731)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in WebKit when rendering web content. A remote attacker can trick the victim into opening a crafted webpage to execute arbitrary code.


12) Use-after-free (CVE-ID: CVE-2026-43715)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in WebKit when rendering content. A remote attacker can craft malicious web content to execute arbitrary code.


13) Use after free (CVE-ID: CVE-2026-43727)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


14) Improper input validation (CVE-ID: CVE-2026-43725)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper input validation in WebKit when rendering content. A local user can trigger the vulnerable behavior to escalate privileges on the system.


15) Memory corruption (CVE-ID: CVE-2026-43663)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


16) Memory corruption (CVE-ID: CVE-2026-39872)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


17) Memory corruption (CVE-ID: CVE-2026-43676)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


18) Use-after-free (CVE-ID: CVE-2026-43704)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to use-after-free in web extensions when handling extension content. A remote attacker can trigger the vulnerable condition to cause a denial of service.


19) Memory corruption (CVE-ID: CVE-2026-43740)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and gain access to sensitive information.


20) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2026-43713)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improperly imposed security restrictions in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and gain access to sensitive information. 


21) Information disclosure (CVE-ID: CVE-2026-43708)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to improper input validation in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and exfiltrate data cross-origin.


22) Memory corruption (CVE-ID: CVE-2026-43707)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


23) Improper access control (CVE-ID: CVE-2026-43705)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to improper access control in WebKit when rendering content. A remote attacker can craft malicious web content to bypass security restrictions.


24) Improper access control (CVE-ID: CVE-2026-43701)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper access control in WebKit when rendering content. A local user can trigger the vulnerable WebKit behavior to escalate privileges on the system.


25) Out-of-bounds write (CVE-ID: CVE-2026-43745)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds write in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


26) Use after free (CVE-ID: CVE-2026-43720)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebKit Canvas. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


27) Improper input validation (CVE-ID: CVE-2026-43721)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:/VI:/VA:/SC:N/SI:N/SA:N]



28) Memory corruption (CVE-ID: CVE-2026-28979)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebRTC. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.


29) Improper input validation (CVE-ID: CVE-2026-43718)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation in WebRTC. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


30) Use after free (CVE-ID: CVE-2026-43717)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in WebRTC. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


31) Memory corruption (CVE-ID: CVE-2026-43716)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


Remediation

Install update from vendor's website.

References