CVE-2026-38754CWE-125

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

Medium · published July 15, 2026

CVSS v3.1
5.1
EPSS
0%
Percentile
13.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00235 · 13.7th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-07-15T00:00Z
EPSS history
Timeline
  • 15 JUL 00:00Z
    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
    cvelistv5