What is CVE-2019-11059?

CVE-2019-11059 is a critical-severity vulnerability in Denx U-Boot, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-05-10.

How severe is CVE-2019-11059?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Denx U-Boot

CVE-2019-11059

Das U-Boot 2016.11-rc1 through 2019.04 mishandles the ext4 64-bit extension, resulting in a buffer overflow.

Vulnerability class: Buffer Overflow

Published 2019-05-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.4th percentile), scored 2026-10-21.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.019 · change: +0.002

Affected products

Denx U-Boot — versions 2016.11

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/u-boot/u-boot/commits/master (Patch, Third Party Advisory)
git.denx.de/

Frequently asked questions

What is CVE-2019-11059?: CVE-2019-11059 is a critical-severity vulnerability in Denx U-Boot, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-05-10.
How severe is CVE-2019-11059?: Critical severity. CVSS v3 base score is 9.8 out of 10.