CVE-2025-70290

State: Published
Severity: 9.8 Critical
Published: Aug 26, 2026
Updated: Aug 27, 2026
Reserved: Jan 9, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-787 Out-of-bounds Write
CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
n/an/a	n/aAffected

References

http://u-boot.com/
https://gist.github.com/c0zy1/4d9648d10a5ff07bda2771ea1298e469

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.