{"id":"CVE-2026-4638","title":"PRTG Network Monitor before version 26.2.120.1449 ships a demo EXE/Script sensor that multiplies two integer parameters using cscript.exe","summary":"PRTG Network Monitor before version 26.2.120.1449 ships a demo EXE/Script sensor that multiplies two integer parameters using cscript.exe. If a non-numeric value is passed instead, cscript.exe raises a 'Type mismatch' runtime error that …","severity":"high","cvss":7.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-209"],"vendor":"Paessler GmbH","product":"PRTG Network Monitor","affected":["prtg_network_monitor < 26.2.120.1449"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:17:10.087","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-4638","references":[{"url":"https://paessler.freshdesk.com/en/support/solutions/articles/76000088640","label":"551230f0-3615-47bd-b7cc-93e92e730bbf"},{"url":"https://r.sec-consult.com/paessler","label":"551230f0-3615-47bd-b7cc-93e92e730bbf"},{"url":"https://www.paessler.com/de/download/","label":"551230f0-3615-47bd-b7cc-93e92e730bbf"},{"url":"https://www.paessler.com/prtg/prtg-network-monitor","label":"551230f0-3615-47bd-b7cc-93e92e730bbf"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-24T12:13:17.297572Z"},"cvssSource":"cna","ingestedAt":"2026-09-24T11:42:06.843Z","slug":"CVE-2026-4638","body":"## Overview\n\nPRTG Network Monitor before version 26.2.120.1449 ships a demo EXE/Script sensor that multiplies two integer parameters using cscript.exe. If a non-numeric value is passed instead, cscript.exe raises a 'Type mismatch' runtime error that includes the offending parameter value in plaintext. PRTG provides a documented placeholder variable, %windowspassword, which resolves to the configured Windows/domain password used by PRTG and can be passed as a sensor parameter. \n\n\n\n\nAny PRTG user who is not restricted to read-only access and is permitted to create sensors (the default for non-read-only users) can pass %windowspassword as an argument to the demo VBScript sensor, triggering the type-mismatch error and causing PRTG to display the plaintext password in the sensor's error output.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}