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Vulnerability details: VCID-8844-hdkd-yyc7
Vulnerability ID VCID-8844-hdkd-yyc7
Aliases CVE-2026-26158
Summary busybox: BusyBox: Arbitrary file modification and privilege escalation via unvalidated tar archive entries
Status Published
Exploitability 0.5
Weighted Severity 6.3
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-73 External Control of File Name or Path
System Score Found at
cvssv3 7.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-26158.json
cvssv3.1 7 https://access.redhat.com/security/cve/CVE-2026-26158
ssvc Track https://access.redhat.com/security/cve/CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
epss 5e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26158
cvssv3.1 7 https://bugzilla.redhat.com/show_bug.cgi?id=2439040
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=2439040
cvssv3.1 7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7 https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
ssvc Track https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-26158.json
https://api.first.org/data/v1/epss?cve=CVE-2026-26158
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26158
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1127782 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1127782
2439040 https://bugzilla.redhat.com/show_bug.cgi?id=2439040
archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
cpe:/a:redhat:hummingbird:1 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:hummingbird:1
cpe:/o:redhat:enterprise_linux:6 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/o:redhat:enterprise_linux:6
CVE-2026-26158 https://access.redhat.com/security/cve/CVE-2026-26158
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-26158.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/security/cve/CVE-2026-26158
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-02-12T04:55:24Z/ Found at https://access.redhat.com/security/cve/CVE-2026-26158
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://bugzilla.redhat.com/show_bug.cgi?id=2439040
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-02-12T04:55:24Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=2439040
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-02-12T04:55:24Z/ Found at https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
Exploit Prediction Scoring System (EPSS)
Percentile 0.0024
EPSS Score 5e-05
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:31:30.100668+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-26158.json 38.0.0