SB2026081861 - Multiple vulnerabilities in Apple Safari

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Main Vulnerability Database SB2026081861

SB2026081861 - Multiple vulnerabilities in Apple Safari

Published: August 18, 2026

Security Bulletin ID SB2026081861
CSH Severity
High
Patch available
YES
Number of vulnerabilities 21
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 10% Medium 10% Low 81%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 21 vulnerabilities.


1) State Issues (CVE-ID: CVE-2026-65335)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


2) Buffer overflow (CVE-ID: CVE-2026-64779)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a boundary error in WebKit Storage. A remote attacker can trick the victim into visiting a specially crafted website and  rash the browser.


3) Memory corruption (CVE-ID: CVE-2026-43795)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 5.1 [CVSS:4.0/AV:N/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.


4) Memory corruption (CVE-ID: CVE-2026-65338)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 5.1 [CVSS:4.0/AV:N/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.


5) Memory corruption (CVE-ID: CVE-2026-65341)

CWE-ID: CWE-119 - Memory corruption

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 memory corruption in WebKit when rendering web content. A remote attacker can craft malicious web content to execute arbitrary code.


6) Improper input validation (CVE-ID: CVE-2026-64782)

CWE-ID: CWE-20 - Improper input validation

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 cause a denial of service.

The vulnerability exists due to improper input validation in WebKit when handling web content. A remote attacker can send specially crafted content to cause a denial of service.


7) Improper input validation (CVE-ID: CVE-2026-64781)

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 WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.


8) State Issues (CVE-ID: CVE-2026-65351)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


9) State Issues (CVE-ID: CVE-2026-65340)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


10) State Issues (CVE-ID: CVE-2026-65337)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


11) State Issues (CVE-ID: CVE-2026-65336)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


12) State Issues (CVE-ID: CVE-2026-65332)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


13) Memory corruption (CVE-ID: CVE-2026-64784)

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.


14) State Issues (CVE-ID: CVE-2026-65331)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


15) Use-after-free (CVE-ID: CVE-2026-64715)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a use-after-free error when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a malicious website and crash the browser.


16) Input validation error (CVE-ID: CVE-2026-64780)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 validation of user-supplied input in WebKit. A remote attacker can trick the victim into visiting a malicious website and crash the browser.


17) Buffer overflow (CVE-ID: CVE-2026-65334)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a boundary error in WebKit when processing untrusted web content. A remote attacker can trick the victim into visiting a malicious website and crash the browser.


18) Buffer overflow (CVE-ID: CVE-2026-43794)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 8.6 [CVSS:4.0/AV:N/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 on the target system.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code on the target system.


19) Use-after-free (CVE-ID: CVE-2026-64787)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a use-after-free error when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a malicious website and crash the browser.


20) Information disclosure (CVE-ID: CVE-2026-64778)

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:L/VI:N/VA:N/SC:N/SI:N/SA:N]


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

The vulnerability exists due to excessive data output in WebKit History. A remote attacker can gain unauthorized access to sensitive information.


21) State Issues (CVE-ID: CVE-2026-65333)

CWE-ID: CWE-371 - State Issues

CVSSv4: 5.1 [CVSS:4.0/AV:N/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 crash the browser.

The vulnerability exists due to a state issue when processing untrusted web content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser. 


Remediation

Install update from vendor's website.

References