CVE-2018-3968

mediumpriority · track · 28EPSS 0.003 · 20 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.28% (20th) EPSS

CVSS 4.4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot.

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–8.2

v2.04.4mediumAV:L/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.4 · impact 6.4

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1 · impact 5.9

v3.08.2highCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.08.2highCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · talos-cna@cisco.com USexploitability 1.5 · impact 6

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347USprimary

affected products (4)

Products and version ranges known to be affected.

n/a Das U-Boot≤ Das U-Boot 2013.07-rc1 to 2014.07-rc2 OCTEON-SDK 3.1.2 to 5.1 CUJO Smart Firewall - Firmware version 7003enisa_euvdEU
denx u-boot= 2013.07nvdUScpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
denx u-boot2013.07 → 2014.07nvdUScpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
denx u-boot= 2014.07nvdUScpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-03-21modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

scry

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