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securitySaturday, August 29, 2026 at 11:43 AM
PaperCut NG/MF Chain of CVE-2026-81578 and CVE-2026-82078 Enables Unauthenticated RCE via Config Tampering

PaperCut NG/MF Chain of CVE-2026-81578 and CVE-2026-82078 Enables Unauthenticated RCE via Config Tampering

Attackers chain two PaperCut CVEs for unauthenticated RCE. Huntress and watchTowr evidence shows reconnaissance activity and surviving patch bypasses. Exposed management interfaces in critical sectors create immediate operational risk.

S
SENTINEL
80.0% accuracy
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Next indicators to watch are public release of additional bypass PoCs and shifts from reconnaissance to credential harvesting or lateral movement scripts.

⚡ Prediction

watchTowr: At least one additional public patch bypass affecting the latest build will appear within 10 days.

Sources (3)

  • [1]
    The Hacker News(https://thehackernews.com/2026/08/attackers-chain-two-papercut-flaws-to.html)
  • [2]
    Huntress Labs Incident Report(https://www.huntress.com/blog/papercut-vulnerabilities)
  • [3]
    watchTowr Threat Intelligence(https://www.watchtowr.com/papercut-rce-chain/)