CVE catalog
CVE-2026-26158
busybox: CVE-2026-26158
- Severity
- High · CVSS 7
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.19% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | busybox | sid | 1:1.38.0-3 | fixed |
| Debian | busybox | forky | 1:1.38.0-3 | fixed |
| Debian | busybox | trixie | 1:1.37.0-6 | vulnerable |
| Debian | busybox | bookworm | 1:1.35.0-4+deb12u1 | vulnerable |
| Opensuse | busybox | tumbleweed | 1.37.0-9.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | busybox | source | sid | 1:1.37.0-10.1 | not yet assigned | Not reported | [1127782] |
| Debian | busybox | source | forky | 1:1.37.0-10.1 | not yet assigned | Not reported | [1127782] |
| Debian | busybox | source | trixie | (unfixed) | not yet assigned | Not reported | [1127782] |
| Debian | busybox | source | bookworm | (unfixed) | not yet assigned | Not reported | [1127782] |
| Opensuse | busybox | rpm | tumbleweed | 1.37.0-9.1 | Not reported | OPENSUSE-SU-2026:10231-1 | Not reported |
Notes
[trixie] busybox: Minor issue [bookworm] busybox: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [busybox]Affected
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [busybox-static]Affected
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [busybox-syslogd]Affected
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1· all · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1· all · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [udhcpc]Affected
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [udhcpd]Affected
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormAffected
dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
[Debian 13 (Trixie)]
- [busybox]Affected
Source package: [busybox]
Details (2)
1:1.37.0-6+b8· amd64 · trixieAffected
dsa · busybox · debian · 13
1:1.37.0-6+b8· arm64 · trixieAffected
dsa · busybox · debian · 13
- [busybox-static]Affected
Source package: [busybox]
Details (2)
1:1.37.0-6+b8· amd64 · trixieAffected
dsa · busybox · debian · 13
1:1.37.0-6+b8· arm64 · trixieAffected
dsa · busybox · debian · 13
- [busybox-syslogd]Affected
Source package: [busybox]
Details (2)
1:1.37.0-6· all · trixieAffected
dsa · busybox · debian · 13
1:1.37.0-6· all · trixieAffected
dsa · busybox · debian · 13
- [udhcpc]Affected
Source package: [busybox]
Details (2)
1:1.37.0-6· all · trixieAffected
dsa · busybox · debian · 13
1:1.37.0-6· all · trixieAffected
dsa · busybox · debian · 13
- [udhcpd]Affected
Source package: [busybox]
Details (2)
1:1.37.0-6· all · trixieAffected
dsa · busybox · debian · 13
1:1.37.0-6· all · trixieAffected
dsa · busybox · debian · 13
[openSUSE Tumbleweed]
- [busybox-static]Unknown
Source package: [busybox]
Details (1)
1.38.0-2.1· x86_64 · tumbleweedUnknown · Fixed:
1.37.0-9.1Version impact unknown
dsa · busybox · opensuse · tumbleweed
- [busybox-testsuite]Unknown
Source package: [busybox]
Details (1)
1.38.0-2.1· x86_64 · tumbleweedUnknown · Fixed:
1.37.0-9.1Version impact unknown
dsa · busybox · opensuse · tumbleweed
- [busybox-warewulf3]Unknown
Source package: [busybox]
Details (1)
1.38.0-2.1· x86_64 · tumbleweedUnknown · Fixed:
1.37.0-9.1Version impact unknown
dsa · busybox · opensuse · tumbleweed
- [busybox]Fixed
Source package: [busybox]
Details (1)
1.38.0-2.1· x86_64 · tumbleweedFixed · Fixed:
1.37.0-9.1dsa · busybox · opensuse · tumbleweed
Observed:
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-253495.json]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10231-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-26158]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10231-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-26158]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26158.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0395.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]