What is CVE-2026-34961?

CVE-2026-34961 is a medium-severity vulnerability in Barebox, classified under Out-of-bounds Read. CVSS score: 6.2/10. Published 2026-05-11.

How severe is CVE-2026-34961?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Out-of-bounds Read in Barebox

CVE-2026-34961

barebox prior to version 2026.04.0 contains out-of-bounds read vulnerabilities in ext4 extent parsing due to missing validation of the eh_entries field against buffer capacity in fs/ext4/ext4_common.c. Attackers can supply a malicious ext4…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Barebox — versions 0
Pengutronix Barebox

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Release Notes, patch)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-34961?: CVE-2026-34961 is a medium-severity vulnerability in Barebox, classified under Out-of-bounds Read. CVSS score: 6.2/10. Published 2026-05-11.
How severe is CVE-2026-34961?: Medium severity. CVSS v3 base score is 6.2 out of 10.