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CVE-2026-38754

Quick assessment

Affected
BusyBox BusyBox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

busybox是busybox团队开源的一套嵌入式命令行工具箱。 BusyBox 1.38.0版本存在安全漏洞，该漏洞源于ifsbreakup()函数（shell/ash.c）中存在堆溢出，可能导致攻击者通过提供特制输入造成拒绝服务。

CVSS 5.1 · Medium EPSS 0.41% · P32

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
BusyBox BusyBox 1.00≤ 1.38.0 affected
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I. Basic Information for CVE-2026-38754

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
BusyBox 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
busybox是busybox团队开源的一套嵌入式命令行工具箱。 BusyBox 1.38.0版本存在安全漏洞，该漏洞源于ifsbreakup()函数（shell/ash.c）中存在堆溢出，可能导致攻击者通过提供特制输入造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
BusyBox BusyBox 1.00 ~ 1.38.0 -

II. Public POCs for CVE-2026-38754

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III. Intelligence Information for CVE-2026-38754

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Mailing List Discussions for CVE-2026-38754 (2)

Other References for CVE-2026-38754 (1)

Same Patch Batch · BusyBox · 2026-07-15 · 4 CVEs total

CVE-2026-38753 4.9 MEDIUM BusyBox 安全漏洞
CVE-2026-38752 2.9 LOW BusyBox 安全漏洞
CVE-2026-38755 2.9 LOW BusyBox 安全漏洞

IV. Related Vulnerabilities

Same product: BusyBox
Same vendor: BusyBox
Same weakness: CWE-125

V. Comments for CVE-2026-38754

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