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Vulnerability · Published Feb 11, 2026 · Assigned by redhat

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

High 7.0

In plain English

A high-severity security flaw in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.7%top 45.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12busyboxno fix listedDEBIAN-CVE-2026-26157
Debian:13busyboxno fix listedDEBIAN-CVE-2026-26157
Debian:14busybox1:1.37.0-10.1DEBIAN-CVE-2026-26157
Ubuntu:22.04:LTSbusyboxno fix listedUBUNTU-CVE-2026-26157
Ubuntu:24.04:LTSbusyboxno fix listedUBUNTU-CVE-2026-26157
Ubuntu:25.10busyboxno fix listedUBUNTU-CVE-2026-26157
Ubuntu:26.04:LTSbusyboxno fix listedUBUNTU-CVE-2026-26157
Ubuntu:26.10busyboxno fix listedUBUNTU-CVE-2026-26157

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Enterprise Linux 6 see references

Weakness: CWE-73 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References