7.0
High
CVE-2026-26157 Busybox: busybox: arbitrary file overwrite and potential code execution via incomplete path sanitization
Description
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 3.1 detail
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HExploitable with local access to the machine, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- None
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Hardened Images 1 | Versions not published | |
| Red Hat Hardened Images 1.37 | earliest → < 1.37.0-7.2.hum1 | 1.37.0-7.2.hum1 |
| RUGGEDCOM RST2428P 4.0 | earliest → < 4.0 | 4.0 |
References
- RHSA-2026:13831 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2439039 bugzilla.redhat.com
- git.busybox.net git.busybox.net
Timeline
- Published
- Last modified
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