SB2026032539 - Multiple vulnerabilities in Apple tvOS
Published: March 25, 2026 Updated: March 30, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 17 vulnerabilities.
1) Use after free (CVE-ID: CVE-2026-20687)
CWE-ID: CWE-416 - Use After Free
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 a use-after-free error in Kernel. A local application can cause unexpected system termination or write kernel memory.
2) Memory corruption (CVE-ID: CVE-2026-28859)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper input validation in WebKit when processing web content. A remote attacker can trick the victim into visiting a specially crafted website and force the browser into processing restricted web content outside the sandbox.
3) State Issues (CVE-ID: CVE-2026-20665)
CWE-ID: CWE-371 - State Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to a state management issue in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and prevent Content Security Policy from being enforced.
4) Improper input validation (CVE-ID: CVE-2026-28852)
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: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 insufficient input validation in UIFoundation. A local application can cause a denial-of-service.
5) Information disclosure (CVE-ID: CVE-2026-28863)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
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 gain access to potentially sensitive information.
The vulnerability exists due to excessive data output in Sandbox Profiles. A local application can fingerprint the user.
6) Improper access control (CVE-ID: CVE-2026-28882)
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 user to escalate privileges and execute arbitrary code.
The vulnerability exists due to improper access control in libxpc when handling local application requests. A local user can exploit this to escalate privileges and execute arbitrary code.
Exploitation requires local access and the ability to execute a local application.
7) Memory corruption (CVE-ID: CVE-2026-20698)
CWE-ID: CWE-119 - Memory corruption
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 a boundary error in Kernel. A local application can cause unexpected system termination or corrupt kernel memory.
8) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2026-28865)
CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to an error in the 802.1X protocol implementation when handling authentication requests. A remote attacker on the local network can intercept sensitive information.
9) Improper access control (CVE-ID: CVE-2026-28867)
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 user to execute arbitrary code in kernel space.
The vulnerability exists due to improper access control in the kernel when handling local application requests. A local user can exploit this to execute arbitrary code in kernel space.
Successful exploitation may allow the attacker to gain full control over the system.
10) Out-of-bounds read (CVE-ID: CVE-2025-64505)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 within the png_do_quantize function when processing PNG files with malformed palette indices. A remote attacker can pass a specially crafted image file to the application, trigger an out-of-bounds read error and read contents of memory on the system.
11) Information disclosure (CVE-ID: CVE-2026-28870)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
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 controls in GeoServices when handling local application requests. A local user can exploit this to disclose sensitive information.
Access to the local system is required to exploit this vulnerability.
12) Insufficiently protected credentials (CVE-ID: CVE-2025-14524)
CWE-ID: CWE-522 - Insufficiently Protected Credentials
CVSSv4: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an attacker to obtain bearer token,
The vulnerability exists due to an error when handling cross-protocol redirects. When an oauth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a cross-protocol redirect to a second URL that uses an IMAP, LDAP, POP3 or SMTP scheme, curl might wrongly pass on the bearer token to the new target host.
13) Improper input validation (CVE-ID: CVE-2026-28878)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/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 Crash Reporter when handling crash reports. A local user can provide specially crafted input to cause a denial of service.
Exploitation does not require elevated privileges.
14) Improper input validation (CVE-ID: CVE-2026-28886)
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:L/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 CoreUtils. A local user can cause a denial-of-service.
15) Memory corruption (CVE-ID: CVE-2026-20690)
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 CoreMedia. A remote attacker can trick the victim into opening a specially crafted file and perform a denial of service (DoS) attack.
16) Buffer overflow (CVE-ID: CVE-2026-28822)
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 attack.
The vulnerability exists due to a boundary error in the Audio subsystem. A remote attacker can trick the victim into opening a specially crafted media file, trigger memory corruption and perform a denial of service attack.
17) Use after free (CVE-ID: CVE-2026-28879)
CWE-ID: CWE-416 - Use After Free
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 use-after-free error in Audio. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.
Remediation
Install update from vendor's website.