CVE-2026-4638 (GCVE-0-2026-4638)
Vulnerability from cvelistv5
Published
2026-09-24 10:57
Modified
2026-09-24 12:14
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-209 - Generation of error message containing sensitive information
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 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.
Any 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.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Paessler GmbH | PRTG Network Monitor |
Version: 0 < 26.2.120.1449 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-4638",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-24T12:13:17.297572Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T12:14:20.861Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "PRTG Network Monitor",
"vendor": "Paessler GmbH",
"versions": [
{
"lessThan": "26.2.120.1449",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "J. Kruchem, SEC Consult Vulnerability Lab"
},
{
"lang": "en",
"type": "finder",
"value": "S. Michlits, SEC Consult Vulnerability Lab"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cdiv\u003e\u003cspan\u003ePRTG 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 \u0027Type mismatch\u0027 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.\u0026nbsp;\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003eAny 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\u0027s error output.\u003c/span\u003e\u003c/div\u003e"
}
],
"value": "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 \u0027Type mismatch\u0027 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.\u00a0\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\u0027s error output."
}
],
"impacts": [
{
"capecId": "CAPEC-54",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-54 Query System for Information"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-209",
"description": "CWE-209 Generation of error message containing sensitive information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T10:57:54.203Z",
"orgId": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"shortName": "SEC-VLab"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://r.sec-consult.com/paessler"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://paessler.freshdesk.com/en/support/solutions/articles/76000088640"
},
{
"tags": [
"patch"
],
"url": "https://www.paessler.com/de/download/"
},
{
"tags": [
"product"
],
"url": "https://www.paessler.com/prtg/prtg-network-monitor"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Upgrade to Paessler PRTG Network Monitor version 26.2.120.1449 or later."
}
],
"value": "Upgrade to Paessler PRTG Network Monitor version 26.2.120.1449 or later."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Plaintext Password Disclosure via VBScript Sensor Error Message in Paessler PRTG Network Monitor",
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
}
},
"cveMetadata": {
"assignerOrgId": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"assignerShortName": "SEC-VLab",
"cveId": "CVE-2026-4638",
"datePublished": "2026-09-24T10:57:54.203Z",
"dateReserved": "2026-03-23T10:32:11.997Z",
"dateUpdated": "2026-09-24T12:14:20.861Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-4638\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-24T12:13:17.297572Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-24T12:14:08.861Z\"}}], \"cna\": {\"title\": \"Plaintext Password Disclosure via VBScript Sensor Error Message in Paessler PRTG Network Monitor\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"J. Kruchem, SEC Consult Vulnerability Lab\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"S. Michlits, SEC Consult Vulnerability Lab\"}], \"impacts\": [{\"capecId\": \"CAPEC-54\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-54 Query System for Information\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 7.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"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\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Paessler GmbH\", \"product\": \"PRTG Network Monitor\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.2.120.1449\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to Paessler PRTG Network Monitor version 26.2.120.1449 or later.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Upgrade to Paessler PRTG Network Monitor version 26.2.120.1449 or later.\", \"base64\": false}]}], \"references\": [{\"url\": \"https://r.sec-consult.com/paessler\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://paessler.freshdesk.com/en/support/solutions/articles/76000088640\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.paessler.com/de/download/\", \"tags\": [\"patch\"]}, {\"url\": \"https://www.paessler.com/prtg/prtg-network-monitor\", \"tags\": [\"product\"]}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.5\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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 \u0027Type mismatch\u0027 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.\\u00a0\\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\u0027s error output.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cdiv\u003e\u003cspan\u003ePRTG 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 \u0027Type mismatch\u0027 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.\u0026nbsp;\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003eAny 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\u0027s error output.\u003c/span\u003e\u003c/div\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-209\", \"description\": \"CWE-209 Generation of error message containing sensitive information\"}]}], \"providerMetadata\": {\"orgId\": \"551230f0-3615-47bd-b7cc-93e92e730bbf\", \"shortName\": \"SEC-VLab\", \"dateUpdated\": \"2026-09-24T10:57:54.203Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-4638\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-24T12:14:20.861Z\", \"dateReserved\": \"2026-03-23T10:32:11.997Z\", \"assignerOrgId\": \"551230f0-3615-47bd-b7cc-93e92e730bbf\", \"datePublished\": \"2026-09-24T10:57:54.203Z\", \"assignerShortName\": \"SEC-VLab\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…