SB2026051217 - Multiple vulnerabilities in Apple watchOS

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Main Vulnerability Database SB2026051217

SB2026051217 - Multiple vulnerabilities in Apple watchOS

Published: May 12, 2026

Security Bulletin ID SB2026051217
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 43
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 21% Low 79%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 43 vulnerabilities.


1) Memory corruption (CVE-ID: CVE-2026-28846)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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

The vulnerability exists due to a boundary error in SceneKit. A remote attacker can trick the victim into opening a specially crafted file and cause unexpected app termination.


2) Memory corruption (CVE-ID: CVE-2026-28955)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


3) Improper access control (CVE-ID: CVE-2026-28974)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to improper access restrictions in Spotlight. A local application can cause a denial-of-service.


4) Improper access control (CVE-ID: CVE-2026-28996)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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/E:U/U:Clear


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in Storage when handling local application access. A local user can access sensitive information to disclose sensitive information.


5) Protection Mechanism Failure (CVE-ID: CVE-2026-43660)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to prevent CSP enforcement.

The vulnerability exists due to insufficient implementation of security measures in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and prevent Content Security Policy from being enforced.


6) Protection Mechanism Failure (CVE-ID: CVE-2026-28907)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to prevent CSP enforcement.

The vulnerability exists due to insufficient implementation of security measures in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and prevent Content Security Policy from being enforced.


7) Memory corruption (CVE-ID: CVE-2026-43658)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected Safari crash.


8) Use after free (CVE-ID: CVE-2026-28883)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


9) Memory corruption (CVE-ID: CVE-2026-28847)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


10) Memory corruption (CVE-ID: CVE-2026-28904)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


11) Memory corruption (CVE-ID: CVE-2026-28903)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


12) Out-of-bounds write (CVE-ID: CVE-2026-43666)

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

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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

The vulnerability exists due to an out-of-bounds write in mDNSResponder. A remote attacker on the local network can cause a denial-of-service.


13) Memory corruption (CVE-ID: CVE-2026-28953)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


14) Memory corruption (CVE-ID: CVE-2026-28902)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


15) Memory corruption (CVE-ID: CVE-2026-28901)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


16) Memory corruption (CVE-ID: CVE-2026-28913)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


17) Improper input validation (CVE-ID: CVE-2026-28917)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected process crash.


18) Use after free (CVE-ID: CVE-2026-28947)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Clear


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 website and perform an unexpected Safari crash.


19) Use after free (CVE-ID: CVE-2026-28942)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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 website and perform an unexpected Safari crash.


20) Use-after-free (CVE-ID: CVE-2026-28994)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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

The vulnerability exists due to use-after-free in Wi-Fi when handling wireless network traffic. A remote attacker can send specially crafted wireless traffic to cause a denial of service.


21) Memory corruption (CVE-ID: CVE-2026-28991)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Accelerate. A local application can cause a denial-of-service.


22) Use after free (CVE-ID: CVE-2026-43668)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in mDNSResponder. A remote attacker can trick the victim into opening a specially crafted file and cause unexpected system termination or corrupt kernel memory.


23) Memory corruption (CVE-ID: CVE-2026-28977)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in ImageIO. A local application can trick the victim into opening a specially crafted file and perform unexpected app termination.


24) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2026-28988)

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

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to bypass implemented security restrictions. 

The vulnerability exists due to improperly imposed permissions in Accounts. A local application can bypass certain Privacy preferences.


25) Memory corruption (CVE-ID: CVE-2026-28959)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in APFS. A local application can cause unexpected system termination.


26) Improper access control (CVE-ID: CVE-2026-28995)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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/E:U/U:Clear


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

The vulnerability exists due to improper access restrictions in App Intents. A local application can break out of its sandbox.


27) Improper input validation (CVE-ID: CVE-2026-1837)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 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/E:U/U:Green


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

The vulnerability exists due to improper input validation in AppleJPEG when parsing input. A remote attacker can send a specially crafted input to cause a denial of service.


28) Improper input validation (CVE-ID: CVE-2026-28956)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 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/E:U/U:Clear


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

The vulnerability exists due to insufficient input validation in AppleJPEG. A local application can trick the victim into opening a specially crafted file and perform unexpected app termination or corrupt process memory.


29) Memory corruption (CVE-ID: CVE-2026-39869)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Green


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

The vulnerability exists due to a boundary error in Audio. A remote attacker can trick the victim into opening a specially crafted file and perform a denial of service (DoS) attack.


30) Memory corruption (CVE-ID: CVE-2026-28918)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in CoreSymbolication. A local application can trick the victim into opening a specially crafted file and perform an unexpected app termination.


31) Memory corruption (CVE-ID: CVE-2026-43661)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a boundary error in ImageIO. A remote attacker can trick the victim into opening a specially crafted file and escalate privileges on the system.


32) Memory corruption (CVE-ID: CVE-2026-28990)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a boundary error in ImageIO. A remote attacker can trick the victim into opening a specially crafted file and escalate privileges on the system.


33) Improper access control (CVE-ID: CVE-2026-28983)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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/E:U/U:Clear


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

The vulnerability exists due to improper access restrictions in LaunchServices. A remote attacker can trick the victim into opening a specially crafted file and cause a denial of service.


34) Improper input validation (CVE-ID: CVE-2026-28992)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in IOHIDFamily when processing user-supplied input. A local user can send specially crafted input to cause a denial of service.


35) Improper input validation (CVE-ID: CVE-2026-28943)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:/VI:/VA:/SC:N/SI:N/SA:N/E:U/U:Clear



36) Use after free (CVE-ID: CVE-2026-28969)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in IOKit. A local application can cause unexpected system termination.


37) Memory corruption (CVE-ID: CVE-2026-43655)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in IOSurfaceAccelerator. A local application can cause unexpected system termination or read kernel memory.


38) Memory corruption (CVE-ID: CVE-2026-43654)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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

The vulnerability exists due to a boundary error in Kernel. A local application can disclose kernel memory.


39) Improper input validation (CVE-ID: CVE-2026-28897)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation in Kernel. A local user can cause unexpected system termination or read kernel memory.


40) Out-of-bounds write (CVE-ID: CVE-2026-28972)

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

CVSSv4: 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/E:U/U:Clear


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

The vulnerability exists due to an out-of-bounds write in Kernel. A local application can cause unexpected system termination or write kernel memory.


41) Improper access control (CVE-ID: CVE-2026-28986)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper access control in kernel when handling a local application. A local user can run a local application to cause a denial of service.


42) Improper input validation (CVE-ID: CVE-2026-28987)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:/VI:/VA:/SC:N/SI:N/SA:N/E:U/U:Clear



43) Out-of-bounds read (CVE-ID: CVE-2026-28920)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 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/E:U/U:Green


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

The vulnerability exists due to a boundary condition in zlib. A remote attacker can trick the victim into visiting a specially crafted website, trigger an out-of-bounds read error and read contents of memory on the system.


Remediation

Install update from vendor's website.

References