Is It On KEV?

PaperCut NG/MF

YES - ON THE CISA KEV LIST
CVE-2026-81578

PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

CISA catalog due date2026-09-14
58 days past due
EPSS exploit probability (next 30 days)84.7% · 100percentile
From CVE publication to KEV listing3 days (2026-08-28 → 2026-08-31)
Remediation window (KEV listing to due date)14 days
Days on the KEV list72 days
Date added to KEV2026-08-31
Known ransomware campaign useUnknown
VendorPaperCut
ProductNG/MF
Weaknesses (CWE)CWE-306

PaperCut: 5 entries (0.3% of all KEV entries are from this vendor); 3 added in 2026.

BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.

Your BOD 26-04 window (SSVC tier helper)

Your remediation window ends:

Description

PaperCut NG/MF contains a missing authentication for critical function vulnerability which allows an unauthenticated remote attacker to modify certain system configurations. This vulnerability can be chained with CVE-2026-82078.

Required action (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes

https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-81578

References

Other KEV entries for this vendor: PaperCut

PaperCut - Vendors with KEV entries

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