PaperCut MF/NG Improper Access Control Vulnerability
PaperCut MF/NG contains an improper access control vulnerability within the SetupCompleted class that allows authentication bypass and code execution in the context of system.
- Vendor
- PaperCut
- Product
- MF/NG
- CVSS
- 9.8
- EPSS (exploit probability)
- 100.0%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2023-27350 being exploited?
Yes. CISA added CVE-2023-27350 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild. CISA marks it as known to be used in ransomware campaigns.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 100.0% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-25. Full cross-catalog view: /kev-comparison
CVE-2023-27350 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other PaperCut CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2023-27351 PaperCut NG/MF Improper Authentication Vulnerabilityransomware use | [ HIGH ] | 7.5 | 78.1% | |
| CVE-2023-2533 PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability | [ HIGH ] | 8.4 | 28.8% |