CVE-2026-82077
📛 CVE Title
PaperCut NG/MF: Remote Code Execution via Scan2Fax
Description
An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute arbitrary commands on the underlying host via crafted fax provider settings.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- PaperCut
- CVSS severity
- HIGH
- CVSS score
- 7.3 / 10
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P- Effective score
- 7.3 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-22,CWE-78 - Reserved
- 2026-08-28
- Published
- 2026-09-24 06:43 UTC
- Last updated
- 2026-09-24 12:45 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/82xxx/CVE-2026-82077.json
- Linked Threat
- CVE-2026-82077 — PaperCut NG/MF: Remote Code Execution via Scan2Fax
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| PaperCut | PaperCut NG/MF |
0 (affected),
26.0.0 (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-82077.json.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82077",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-24T12:45:25.059939Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T12:45:33.120Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "PaperCut NG/MF",
"vendor": "PaperCut",
"versions": [
{
"lessThan": "25.0.13",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "26.0.5",
"status": "affected",
"version": "26.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Piotr Bazydlo (@chudyPB) of watchTowr"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute arbitrary commands on the underlying host via crafted fax provider settings.<br>"
}
],
"value": "An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute arbitrary commands on the underlying host via\u00a0crafted fax provider settings."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"exploitMaturity": "PROOF_OF_CONCEPT",
"privilegesRequired": "HIGH",
"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:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T06:43:35.197Z",
"orgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4",
"shortName": "PaperCut"
},
"references": [
{
"url": "https://www.papercut.com/kb/Main/security-bulletin-sep-2026/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "PaperCut NG/MF: Remote Code Execution via Scan2Fax",
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
}
},
"cveMetadata": {
"assignerOrgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4",
"assignerShortName": "PaperCut",
"cveId": "CVE-2026-82077",
"datePublished": "2026-09-24T06:43:35.197Z",
"dateReserved": "2026-08-28T00:13:21.684Z",
"dateUpdated": "2026-09-24T12:45:33.120Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}