CVE-2025-70290
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductU-Boot
PublishedAug 26, 2026
First seenAug 26, 2026
Weakness typeCWE-787Out-of-bounds writeCWE-190Integer overflow
How to fix
Update
- Denx U-Boot2026.04 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Denx U-Boot | No range specified | 2026.04 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.