High 7.0Published Feb 11, 2026

CVE-2026-26157Busybox: busybox: arbitrary file overwrite and potential code execution via incomplete path sanitization

Updated under an hour ago (Oct 27, 2026, 6:10 PM ET)

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It affects Red Hat Hardened Images and 2 other products. Add what you run to find out whether that includes you.

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Exploited in the last 30 days

A flaw was found in BusyBox. Incomplete path sanitization in its archive extraction utilities allows an attacker to craft malicious archives that when extracted, and under specific conditions, may write to files outside the intended directory. This can lead to arbitrary file overwrite, potentially enabling code execution through the modification of sensitive system files.

CVSS: 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-73
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Deferred
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Hardened Images redhat:hummingbird	from 1.37.0-7.2.hum1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 6 redhat:enterprise_linux	6	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V4.0	CISA ADP
Red Hat Red Hat Hardened Images redhat:hummingbird	from 1.37.0-7.2.hum1 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 6 redhat:enterprise_linux	6	CISA ADP

References

References

https://access.redhat.com/errata/RHSA-2026:13831	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-26157	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2439039	issue-tracking, x-refsource-redhat
https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
https://cert-portal.siemens.com/productcert/html/ssa-253495.html
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26157.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.