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Vulnerability record · CVE-2026-26157 · published 11 February 2026

CVE-2026-26157: A flaw was found in BusyBox.

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.

7.0 CVSS 3.1 High EPSS 0.60% · top 53.4% CWE-73 · CWE-73 Deferred
7.0CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
9References
15 Jul 2026Last modified by NVD

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:13831
https://access.redhat.com/security/cve/CVE-2026-26157
https://bugzilla.redhat.com/show_bug.cgi?id=2439039
https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
https://access.redhat.com/errata/RHSA-2026:13831
https://access.redhat.com/security/cve/CVE-2026-26157
https://bugzilla.redhat.com/show_bug.cgi?id=2439039
https://cert-portal.siemens.com/productcert/html/ssa-253495.html
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26157.json

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Source: NIST National Vulnerability Database (record CVE-2026-26157), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.