Arm Trusted Firmware
YES - ON THE CISA KEV LIST
CVE-2021-27562
Arm Trusted Firmware Out-of-Bounds Write Vulnerability
overdue since 2021-11-17
Arm: 9 entries (0.5% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Arm Trusted Firmware contains an out-of-bounds write vulnerability allowing the non-secure (NS) world to trigger a system halt, overwrite secure data, or print out secure data when calling secure functions under the non-secure processing environment (NSPE) handler mode. This vulnerability affects Yealink Device Management servers.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-27562
References
Other KEV entries for this vendor: Arm
- CVE-2024-4610 - Mali GPU Kernel Driver (2024-06-12)
- CVE-2023-4211 - Mali GPU Kernel Driver (2023-10-03)
- CVE-2021-29256 - Mali Graphics Processing Unit (GPU) (2023-07-07)
- CVE-2023-26083 - Mali Graphics Processing Unit (GPU) (2023-04-07)
- CVE-2022-38181 - Mali Graphics Processing Unit (GPU) (2023-03-30)
- CVE-2022-22706 - Mali Graphics Processing Unit (GPU) (2023-03-30)
- CVE-2021-28664 - Mali Graphics Processing Unit (GPU) (2021-11-03)
- CVE-2021-28663 - Mali Graphics Processing Unit (GPU) (2021-11-03)
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