CVE-2026-26158

Vulnerability

CVE-2026-26158

busybox: BusyBox: Arbitrary file modification and privilege escalation via unvalidated tar archive entries

ecosystem: redhat:6

A flaw was found in BusyBox. This vulnerability allows an attacker to modify files outside of the intended extraction directory by crafting a malicious tar archive containing unvalidated hardlink or symlink entries. If the tar archive is extracted with elevated privileges, this flaw can lead to privilege escalation, enabling an attacker to gain unauthorized access to critical system files.

References
severityI
Important

type: vendor

source: secalert@redhat.com

CVSS3.1
7HIGH

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

AVLocal
ACHigh
PRNone
UIRequired
SNot Changed
CHigh
IHigh
AHigh

source: secalert@redhat.com

 CWE
CWE-73

External Control of File Name or Path

source: secalert@redhat.com

published: 2026-02-11 00:00:00

modified: 2026-02-12 15:39:51

Detection

redhat:6
CVE-2026-26158

redhat-vex

OR

unfixedOut of support scope

 

busybox

package type: binary

type: version
unfixedOut of support scope

 

busybox-petitboot

package type: binary

type: version
unfixedOut of support scope

 

busybox

package type: source

type: version

tag: rhel-6-els:23ad430c-409a-10af-658c-0679430b4aea

OR

unfixedOut of support scope

 

busybox

package type: binary

type: version
unfixedOut of support scope

 

busybox-petitboot

package type: binary

type: version
unfixedOut of support scope

 

busybox

package type: source

type: version

tag: rhel-6-extras-including-unpatched:23ad430c-409a-10af-658c-0679430b4aea

OR

unfixedOut of support scope

 

busybox

package type: binary

type: version
unfixedOut of support scope

 

busybox-petitboot

package type: binary

type: version
unfixedOut of support scope

 

busybox

package type: source

type: version

tag: rhel-6-including-unpatched:23ad430c-409a-10af-658c-0679430b4aea

OR

unfixedOut of support scope

 

busybox

package type: binary

type: version
unfixedOut of support scope

 

busybox-petitboot

package type: binary

type: version
unfixedOut of support scope

 

busybox

package type: source

type: version

tag: rhel-6-supplementary:23ad430c-409a-10af-658c-0679430b4aea

Data Sources

  • RedHat Enterprise Linux CSAF VEX

    redhat-vex

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