First published 9/27/2026, 6:35:15 AM · Last updated 9/27/2026, 6:35:15 AM

CVE-2026-81578: PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

PaperCut NG/MF contains a missing authentication for critical function vulnerability that allows an unauthenticated remote attacker to modify certain system configurations and can be chained with CVE-2026-82078. The advisory requires applying vendor mitigations and following CISA BOD 26-04 guidance or discontinuing use if mitigations are unavailable.

Categories: technology

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 8/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 4/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 3/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 4/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Unauthenticated remote modification of system configurations poses a direct security risk and requires stakeholders to apply mandated mitigations.

Location

Sources

CVE-2026-81578: PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

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