What is CVE-2026-29004?

CVE-2026-29004 is a high-severity vulnerability in Vda-linux Busybox_mirror, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-05-04.

How severe is CVE-2026-29004?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Vda-linux Busybox_mirror

CVE-2026-29004

BusyBox before commit 42202bf contains a heap buffer overflow vulnerability in the DHCPv6 client (udhcpc6) DNS_SERVERS option handler in networking/udhcp/d6_dhcpc.c that allows network-adjacent attackers to trigger memory corruption by sen…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (3.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Vda-linux Busybox_mirror — versions 0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

disclosure@vulncheck.com (product)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (technical-description, exploit)

Frequently asked questions

What is CVE-2026-29004?: CVE-2026-29004 is a high-severity vulnerability in Vda-linux Busybox_mirror, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-05-04.
How severe is CVE-2026-29004?: High severity. CVSS v3 base score is 8.1 out of 10.