CVE-2026-38754 | A heap overflow in the ifsbreakup() function (shell/ash.c) o… | CVSS 7.5 HIGH

Description

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

Metadata

CVE ID: CVE-2026-38754
State: PUBLISHED
Assigner: mitre
Reserved: 2026-04-06 00:00 UTC
Published: 2026-07-15 00:00 UTC
Last updated: 2026-07-16 15:21 UTC
Primary CWE: CWE-122
CWE-122 Heap-based Buffer Overflow
Vendor / Product: n/a / n/a
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
n/a	n/a	—	n/a

Weakness (CWE)

CWE	Source	Description
—	cna	n/a
CWE-122	adp	CWE-122 Heap-based Buffer Overflow

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (2)