CVE-2026-81578

CRITICAL9.8Veröffentlicht am 28. August 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.

Aktiv ausgenutzt

  • Seit dem 31. Aug. 2026 im CISA-Katalog ausgenutzter Schwachstellen
  • US-Bundesbehörden müssen sie bis zum 14. Sept. 2026 beheben (BOD 22-01)
  • Angegriffen 1 Tag bevor die Schwachstelle öffentlich wurde

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.

Quelle: CISA KEV · 31. Aug. 2026 31. Aug. 2026 30. Aug. 2026 28. Aug. 2026 28. Aug. 2026 28. Aug. 2026

CVSS-Score9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Schwachstellentyp (CWE)CWE-305
Herstellerpapercut

Betroffene Produkte

HerstellerProdottoVersioni
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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