CVE-2026-38755 | BDVDB-2026-348586 Detail

BusyBoxBusyBox

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact low. Attack vector: local.

Weaknesses#

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

References#

Exploit#

No public exploit known

History#

Version 12026-07-15Record published in the CVE List.
Version 22026-07-20Most recent update recorded in the CVE List.

Published

Published: 2026-07-15
Last modified: 2026-07-20

Vendor information

Vendor: BusyBox
Product: BusyBox

All BusyBox vulnerabilities

Score

2.9 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 10.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 0.52 and <= 1.38.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

2.9 Low

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

Metric breakdown
Attack Vector	Local
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).