CVE-2025-70290CWE-190CWE-787

CVE-2025-70290

Critical · published August 27, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
51.5
In the wild
Unconfirmed
What it is

An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability in the ZFS filesystem support can be triggered by malformed on-disk metadata. The issue may result in incorrect memory allocation followed by out-of-bounds memory access, potentially leading to a crash or arbitrary code execution during the boot process.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00673 · 51.5th percentile
Weaknesses
CWE-190 · Integer Overflow or Wraparound; CWE-787 · Out-of-bounds Write
Published
2026-08-27T00:16Z
References (2)
http://u-boot.com · [email protected]https://gist.github.com/c0zy1/4d9648d10a5ff07bda2771ea1298e469 · [email protected]
EPSS history
Timeline
  • 28 AUG 06:26Z
    EPSS moved — → 0%
    epss
  • 26 AUG 00:00Z
    An issue was discovered in Denx U-Boot before 2026.04
    cvelistv5