{"id":"CVE-2026-105840","title":"lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames","summary":"lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in s…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-22"],"vendor":"Uwe Ohse","product":"lrzsz","affected":["lrzsz < 0.13.0"],"published":"2026-10-06","updated":"2026-10-09","sourceUpdated":"2026-10-09T02:16:55.510","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105840","references":[{"url":"https://ohse.de/uwe/software/lrzsz.html","label":"disclosure@vulncheck.com"},{"url":"https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-path-traversal-via-lrz-restricted-mode-checkpath","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105840.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-105840"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546590"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-105840"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105840"},{"url":"https://access.redhat.com/errata/RHSA-2026:83525"},{"url":"https://access.redhat.com/errata/RHSA-2026:86056"},{"url":"https://access.redhat.com/errata/RHSA-2026:89755"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00313,"epssPercentile":0.24093,"ingestedAt":"2026-10-06T14:00:19.149Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-09T00:59:47.268162Z"},"patched":["enterprise_linux_baseos_v_8"],"slug":"CVE-2026-105840","body":"## Overview\n\nlrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105840.json)\n- **RHSA-2026:83525** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8) · released 2026-10-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:83525)\n- **RHSA-2026:86056** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86056)\n- **RHSA-2026:89755** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-10-26 · [advisory](https://access.redhat.com/errata/RHSA-2026:89755)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}