What is CVE-2021-37848?

CVE-2021-37848 is a high-severity vulnerability in Pengutronix Barebox, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2021-08-02.

How severe is CVE-2021-37848?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Pengutronix Barebox

CVE-2021-37848

common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison.

Published 2021-08-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.015 (74.5th percentile), scored 2026-10-21.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Pengutronix Barebox

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

github.com/saschahauer/barebox/commit/a3337563c705bc8e0cf32f910b3e9e3c43d962ff (Patch, Third Party Advisory)
gist.github.com/gquere/816dfadbad98745090034100a8a651eb (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-37848?: CVE-2021-37848 is a high-severity vulnerability in Pengutronix Barebox, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2021-08-02.
How severe is CVE-2021-37848?: High severity. CVSS v3 base score is 7.5 out of 10.