CVE-2025-70293CWE-122CWE-190

CVE-2025-70293

Critical · published August 27, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
56.7
In the wild
Unconfirmed
What it is

An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability exists in function ext4fs_get_bgdtable, the size calculation can lead to under allocation and this underallocated buffer will be used in memcpy() which could lead to arbitrary code execution, a denial of service, or other unspecified impacts.

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
0.00817 · 56.7th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-190 · Integer Overflow or Wraparound
Published
2026-08-27T00:16Z
References (3)
http://denx.com · [email protected]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