What is CVE-2026-38755?

CVE-2026-38755 is a low-severity vulnerability in Busybox, classified under Uncontrolled Recursion. CVSS score: 2.9/10. Published 2026-07-15.

How severe is CVE-2026-38755?

Low severity. CVSS v3 base score is 2.9 out of 10.

Buffer overflow in Busybox

CVE-2026-38755

A heap overflow in the evalcommand() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.

EPSS: 0.003 (26.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Busybox — versions 1.38.0, 0.52
N/a — versions n/a

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion
CWE-122 — Heap-based Buffer Overflow

References

cve@mitre.org (Product)
cve@mitre.org (Patch, Mailing List, Vendor Advisory)
cve@mitre.org

Frequently asked questions

What is CVE-2026-38755?: CVE-2026-38755 is a low-severity vulnerability in Busybox, classified under Uncontrolled Recursion. CVSS score: 2.9/10. Published 2026-07-15.
How severe is CVE-2026-38755?: Low severity. CVSS v3 base score is 2.9 out of 10.