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CVE-2026-71974

4.8 · MEDIUM

U-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds.

Published Sep 29, 2026CWE-787EPSS 0.18%

Overview

CVE-2026-71974 is a medium-severity vulnerability. It was published on September 29, 2026 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

U-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds. Attackers with physical access can supply crafted boot media with oversized headers to write past the load buffer into bootloader memory on devices without Android Verified Boot protection.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/u-boot/u-bootGitHubgithub.com/u-boot/u-boot/blob/v2026.07/boot/bootmeth_android.c#L356GitHubgithub.com/u-boot/u-boot/commit/35432ef6fe2c79ab72709966e64815a45eb55c76Refpatch.msgid.link/[email protected]Refwww.vulncheck.com/advisories/u-boot-before-2026.10-rc3-out-of-bounds-write-via-android-bootmeth-partition-read

How CyberStrike helps

Frequently asked questions

What is CVE-2026-71974?

CVE-2026-71974 is a medium-severity vulnerability. It was published on September 29, 2026 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2026-71974?

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-71974?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-71974?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-71974 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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