Skip to content
Fencer Vulns
critical 9.8

CVE-2025-70290 json

An issue was discovered in Denx U-Boot before 2026.04.

published 2026-08-26 2 mo ago modified 2026-10-26 13 d ago also EUVD-2025-210793

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

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.

Patch / fix

  • u-boot Ubuntu 22.04 LTS 2022.01+dfsg-2ubuntu2.8
  • u-boot Ubuntu 24.04 LTS 2025.10-0ubuntu0.24.04.3
  • u-boot Ubuntu 26.10 2025.10-0ubuntu5
  • u-boot Ubuntu 26.04 LTS 2025.10-0ubuntu2.1
  • u-boot Ubuntu Pro 16.04 LTS 2016.01+dfsg1-2ubuntu5+esm1
  • u-boot Ubuntu Pro 18.04 LTS 2020.10+dfsg-1ubuntu0~18.04.3+esm1
  • u-boot Ubuntu Pro 20.04 LTS 2021.01+dfsg-3ubuntu0~20.04.6+esm1

ubuntu advisories UBUNTU-CVE-2025-70290

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.