{"id":"CVE-2026-105841","state":"PUBLISHED","title":"lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode","description":"lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.","publishedAt":"2026-10-06T13:35:46.900Z","updatedAt":"2026-10-06T13:58:44.875Z","severity":{"score":7.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Uwe Ohse lrzsz"],"affected":[{"vendor":"Uwe Ohse","product":"lrzsz","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.13.0","versionType":"custom"}]}],"references":["https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html","https://ohse.de/uwe/software/lrzsz.html","https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-os-command-injection-via-lrz-pipe-mode"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/105xxx/CVE-2026-105841.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105841","state":"PUBLISHED","datePublished":"2026-10-06T13:35:46.900Z","dateUpdated":"2026-10-06T13:58:44.875Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-05T22:00:10.842Z"},"containers":{"cna":{"title":"lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode","descriptions":[{"lang":"en","value":"lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user."}],"affected":[{"vendor":"Uwe Ohse","product":"lrzsz","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.13.0","versionType":"custom"}]}],"references":[{"url":"https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html","tags":["vendor-advisory"],"name":"lrzsz 0.13.0 security changes"},{"url":"https://ohse.de/uwe/software/lrzsz.html","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-os-command-injection-via-lrz-pipe-mode","name":"VulnCheck Advisory: lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-06T13:35:46.900Z"},"datePublic":"2026-09-30T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:lrzsz_project:lrzsz:*:*:*:*:*:*:*:*","versionEndExcluding":"0.13.0"}]}]}],"credits":[{"lang":"en","value":"Tristan Madani","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T13:56:33.353808Z","id":"CVE-2026-105841","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-06T13:58:44.875Z"}}]}}}