HIGH🚩 CISA KEV⚡ EXPLOIT✓ PATCH🇬🇧 English

CVE-2026-81578

CVSS 8.8v4.0pub. 2026-08-28upd. 2026-09-01

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.

oryginał EN
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • Papercut Mf

    APP
    Papercut
    < 24.1.925.0.2 – 25.0.12 (bez)26.0.2 – 26.0.4 (bez)
  • Papercut Ng

    APP
    Papercut
    < 24.1.925.0.2 – 25.0.12 (bez)26.0.2 – 26.0.4 (bez)

CISA KEV — szczegółyi

Dostawcai
PaperCut
Produkti
NG/MF
Data dodania do KEVi
31 sierpnia 2026
Termin remediation (USA)i
14 września 2026
Wymagana akcja (CISA)i

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.

oryginał EN
Opis CISAi

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.

oryginał EN
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NATYCHMIASTOWE DZIAŁANIE
Aktywnie wykorzystywane w atakach (CISA KEV). Załataj jak najszybciej.
CISA DEADLINE: 14 września 2026
CWE
Referencje

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