PaperCut Zero-Day Exploited in Attacks, Affecting All NG and MF Versions

PaperCut NG and MF print management software has a zero-day vulnerability actively being exploited in the wild. All versions are affected. Successful exploitation enables post-exploitation activity and server compromise, with confirmed customer incidents already reported.

CRITICALAdvisoryAug 28, 2026

Action required

Immediately patch PaperCut versions 25 and 26 with emergency updates. Hunt for suspicious pc-app.exe activity and anomalies in PaperCut server logs. Block or isolate unpatched systems until patching is complete.

Affected products

PaperCut NGPaperCut MF

Linked articles

PaperCut Zero-Day Exploited in Attacks, Affecting All NG and MF Versions

Source links

https://thehackernews.com/2026/08/papercut-zero-day-exploited-in-attacks.html