CVE-2026-81578PaperCut MF/NG: Authentication Bypass
Aktif olarak istismar ediliyor — PaperCut NG/MF Missing Authentication for Critical Function Vulnerability
CISA bu açığın gerçek saldırılarda kullanıldığını 31.08.2026 tarihinde doğruladı. ABD federal kurumları için düzeltme son tarihi: 14.09.2026.
Gerekli işlem: 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. 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
Açıklama
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.
Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.
Etkilenen ürünler ve sürümler
| Üretici | Ürün | Sürümler | |
|---|---|---|---|
| papercut | papercut mf | < 24.1.9 | |
| PaperCut | PaperCut MF/NG | < 24.1.10, 25.0.0 – < 25.0.13, 26.0.0 – < 26.0.5 | |
| papercut | papercut ng | < 24.1.9 |
Kaynaklar ve yamalar
- https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/ PatchVendor Advisory
- https://github.com/rapid7/metasploit-framework/pull/21842 Issue TrackingPatch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-81578 PatchThird Party AdvisoryUS Government Resource
CPE eşleşmeleri (NVD) (6)
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*< 24.1.9cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*≥ 25.0.2 < 25.0.12cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*≥ 26.0.2 < 26.0.4cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*< 24.1.9cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*≥ 25.0.2 < 25.0.12cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*≥ 26.0.2 < 26.0.4