Is CVE-2021-27138 actively exploited?

CVE-2021-27138 has no public evidence of in-the-wild exploitation as of 2025-11-03.

What is the CVSS score for CVE-2021-27138?

CVE-2021-27138 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Patch guidance is available from denx security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-27138.

2 products: denx u-boot, denx u-boot.

The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.

Primary Vendor: DENX
Published: 2/17/2021
Last Modified: 11/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

denx : u-bootdenx : u-boot

Cite this page

CVE-2021-27138. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2021-27138