CVE-2026-81578

CRITICAL9.8Pubblicata il 28 agosto 2026

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.

Sfruttata attivamente

  • Nel catalogo CISA delle vulnerabilità sfruttate dal 31 ago 2026
  • Le agenzie federali statunitensi devono correggerla entro il 14 set 2026 (direttiva BOD 22-01)
  • Attaccata 1 giorno prima che la vulnerabilità fosse resa pubblica

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.

Fonte: CISA KEV · 31 ago 2026 31 ago 2026 30 ago 2026 28 ago 2026 28 ago 2026 28 ago 2026

Punteggio CVSS9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Tipo di debolezza (CWE)CWE-305
Vendorpapercut

Prodotti coinvolti

VendorProdottoVersioni
papercutpapercut mf< 24.1.9
papercutpapercut ng< 24.1.9

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This product uses the NVD API but is not endorsed or certified by the NVD.

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