{"schema":"threatline.record/2","record":{"id":"CVE-2026-4638","aliases":[],"summary":"Plaintext Password Disclosure via VBScript Sensor Error Message in Paessler PRTG Network Monitor","details":"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 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.","categories":["Unclassified"],"product":"PRTG Network Monitor","vendor":"Paessler GmbH","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-4638","source_modified_at":"2026-09-24T12:14:20.861Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"PRTG Network Monitor","vendor":"Paessler GmbH","versions":[{"status":"affected","version":"0","lessThan":"26.2.120.1449","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-4638","source_modified_at":"2026-09-24T12:14:20.861Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"PRTG Network Monitor","ecosystem":null},"version":"26.2.120.1449","basis":"first unaffected version stated in the CVE record"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00268,"percentile":0.17969,"score_date":"2026-10-23"},"published_at":"2026-09-24T10:57:54.203Z","modified_at":"2026-09-24T12:14:20.861Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-4638","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-24T12:14:20.861Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4638","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://r.sec-consult.com/paessler","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://paessler.freshdesk.com/en/support/solutions/articles/76000088640","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.paessler.com/de/download/","tags":["patch"]},{"source":"CVE List","url":"https://www.paessler.com/prtg/prtg-network-monitor","tags":["product"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-24T12:13:17.297572Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-24T12:14:20.861Z","content_hash":"24feb5dea0733202fe6ad573b18fd46904a5444d7a24e55bb16d817216fa53c2"}}