CVE-2026-71974

U-Boot before 2026.10-rc3 Out-of-Bounds Write via Android Bootmeth Partition Read

Published Sep 29, 2026 CVSS 4.0 · 4.3 Medium EPSS < 1% KEV · Not listed
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

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared U-boot
U-boot u-boot
Vendors & Products U-boot
U-boot u-boot
Type Values Removed Values Added
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.
Title U-Boot before 2026.10-rc3 Out-of-Bounds Write via Android Bootmeth Partition Read
First Time appeared Denx
Denx u-boot
Weaknesses CWE-787
CPEs cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
Vendors & Products Denx
Denx u-boot
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 4.3, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 30, 2026, 7:23 PM
Reserved
Aug 8, 2026, 4:43 PM
Status
Awaiting Analysis
Published
Sep 29, 2026, 10:18 PM
Modified
Sep 30, 2026, 8:17 PM