Vendor
PaperCut: actively exploited vulnerabilities
5 vulnerabilities in PaperCut products are listed in CISA’s catalog of actively exploited vulnerabilities, 2 of them used by ransomware. Latest addition on August 31, 2026: CVE-2026-82078 (NG/MF).
- 5 exploited vulnerabilities in the catalog
- 3 added in the last 12 months
- 2 used by ransomware
- 2 products affected
Affected products
- NG/MF4
- MF/NG1
All exploited vulnerabilities
CISA KEV catalog, newest first: each entry corresponds to observed exploitation.
2026 3 vulnerabilities
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CVE-2026-82078PaperCut NG/MF Unsafe Reflection Vulnerability
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CVE-2026-81578PaperCut NG/MF Missing Authentication for Critical Function Vulnerability
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CVE-2023-27351Used by ransomwarePaperCut NG/MF Improper Authentication Vulnerability
2025 1 vulnerability
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CVE-2023-2533PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
2023 1 vulnerability
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CVE-2023-27350Used by ransomwarePaperCut MF/NG Improper Access Control Vulnerability
What to do
If your estate includes any of these products, make sure the vendor’s patches are applied, starting with the most recent vulnerabilities and those used by ransomware, then look for signs of compromise: an exploited vulnerability has often been used before it was fixed.
Additions from all vendors are tracked on the Actively exploited vulnerabilities page, updated several times a day. Sources: CISA KEV catalog (US public domain) and CERT-FR.