Vulnerability Analysis
PaperCut MF/NG: Authentication Bypass
CVE-2026-81578
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
8.8
HIGH
Exploitability:-
Impact Score:-
Temporal Score:-
EPSS:0.39%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-08-31
Ransomware Use
Unknown
KEV Due Date
2026-09-14
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
0.393%
EPSS Percentile
32.4th pct
GHSA ID
GitHub Severity
HIGH
SSVC Exploitation
Active
SSVC Automatable
Yes
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| Discovered Via | - |
| Record Completeness | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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