CVE-2026-71974CWE-787

CVE-2026-71974

Medium · published September 30, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
6.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
4.3 · 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
EPSS
0.00177 · 6.9th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-09-30T02:18Z
References (5)
https://github.com/u-boot/u-boot · [email protected]https://github.com/u-boot/u-boot/blob/v2026.07/boot/bootmeth_android.c#L356 · [email protected]https://github.com/u-boot/u-boot/commit/35432ef6fe2c79ab72709966e64815a45eb55c76 · [email protected]https://patch.msgid.link/[email protected] · [email protected]https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc3-out-of-bounds-write-via-android-bootmeth-partition-read · [email protected]
EPSS history
Timeline
  • 01 OCT 03:49Z
    EPSS moved — → 0%
    epss
  • 29 SEP 21:29Z
    U-Boot before 2026.10-rc3 Out-of-Bounds Write via Android Bootmeth Partition Read
    cvelistv5