{"id":"CVE-2026-124745","aliases":["DEBIAN-CVE-2026-124745","EUVD-2026-123407","GHSA-h2jx-m6c2-wg9q","RHSA-2026:81391","UBUNTU-CVE-2026-124745"],"status":"published","title":"Busybox: tar deferred hardlink target resolved through a deferred symlink escapes the extraction directory","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.0017,"percentile":0.06447,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-59"],"published":"2026-10-14T10:32:25Z","modified":"2026-11-14T21:00:06Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"busybox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.35.0-4","1:1.35.0-4+deb12u1","1:1.36.0-1~exp1","1:1.36.1-1","1:1.36.1-2","1:1.36.1-3","1:1.36.1-3.1","1:1.36.1-4","1:1.36.1-5","1:1.36.1-6","1:1.36.1-6~exp.1","1:1.36.1-7","1:1.36.1-8","1:1.36.1-9","1:1.37.0-1","1:1.37.0-10","1:1.37.0-10.1","1:1.37.0-2","1:1.37.0-3","1:1.37.0-4","1:1.37.0-5","1:1.37.0-6","1:1.37.0-7","1:1.37.0-8","1:1.37.0-9","1:1.38.0-1","1:1.38.0-2","1:1.38.0-3"]},{"source":"osv","ecosystem":"Debian:13","package":"busybox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.37.0-10","1:1.37.0-10.1","1:1.37.0-6","1:1.37.0-7","1:1.37.0-8","1:1.37.0-9","1:1.38.0-1","1:1.38.0-2","1:1.38.0-3"]},{"source":"osv","ecosystem":"Debian:14","package":"busybox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.37.0-10","1:1.37.0-10.1","1:1.37.0-6","1:1.37.0-7","1:1.37.0-8","1:1.37.0-9","1:1.38.0-1","1:1.38.0-2","1:1.38.0-3"]},{"source":"osv","ecosystem":"Red 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hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat hardened images"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:81391","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-124745","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2571637","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124745","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h2jx-m6c2-wg9q"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-124745","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-108119","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-88842","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-92205","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_81391.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531355","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88842","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88842","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2558404","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92205","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92205","tags":["advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-26-705/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548611","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-108119","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108119","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-124745","tags":["advisory","report"]},{"url":"https://ubuntu.com/security/CVE-2026-124745","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-124745","title":"Busybox: tar deferred hardlink target resolved through a deferred symlink escapes the extraction directory","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","status":"published","published":"2026-11-11T12:29:18.382Z","modified":"2026-11-13T04:05:21.468Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-59"],"updated_at":"2026-11-13T05:23:39.894259Z"}],"euvd":[{"id":"EUVD-2026-123407","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","status":"published","published":"2026-11-11T12:29:18Z","modified":"2026-11-13T04:05:21Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-13T05:37:18.011397Z"}],"ghsa":[{"id":"GHSA-h2jx-m6c2-wg9q","title":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves...","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","status":"published","published":"2026-11-11T15:31:00Z","modified":"2026-11-13T06:32:37Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-59"],"updated_at":"2026-11-13T06:45:48.579611Z"}],"nvd":[{"id":"CVE-2026-124745","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","status":"published","published":"2026-11-11T13:17:20.043Z","modified":"2026-11-13T05:18:16.78Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-59"],"updated_at":"2026-11-13T06:34:39.081981Z"}],"osv":[{"id":"DEBIAN-CVE-2026-124745","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","status":"published","published":"2026-11-11T13:17:20.043Z","modified":"2026-11-14T21:00:06.506105528Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-14T21:24:26.439237Z"},{"id":"RHSA-2026:81391","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","status":"published","published":"2026-10-14T10:32:25Z","modified":"2026-11-13T19:14:00.2571765Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-13T19:24:56.765694Z"},{"id":"UBUNTU-CVE-2026-124745","description":"A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.","status":"published","published":"2026-11-12T00:00:00Z","modified":"2026-11-13T21:05:18.714492225Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-13T21:30:20.292037Z"}]}}