{"id":"CVE-2026-105842","title":"lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-supplied filenames into Pathname","summary":"lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-supplied filenames into Pathname. Malicious ZMODEM senders can supply filenames up to 8192 by…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","cwe":["CWE-122","CWE-120"],"vendor":"Uwe Ohse","product":"lrzsz","affected":["lrzsz < 0.13.0"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:17:16.720","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105842","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-heap-buffer-overflow-via-lrz-procheader-pathname","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105842.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-105842"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546599"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-105842"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105842"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T19:25:48.261781Z"},"ingestedAt":"2026-10-06T14:00:19.148Z","epss":0.00206,"epssPercentile":0.10599,"slug":"CVE-2026-105842","body":"## Overview\n\nlrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-supplied filenames into Pathname. Malicious ZMODEM senders can supply filenames up to 8192 bytes, overflowing the buffer via sprintf() in pipe mode or strcpy() to corrupt heap memory and crash lrz.\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** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105842.json)","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}