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

August 28, 2026 1 Min Read 0

Threat Intelligence Brief

Curated summary with source attribution

Source: thehackernews.com

Threat Risk: High
Victim: Organizations using PaperCut NG or MF print management software
Incident: Active zero-day exploitation of PaperCut print management software.
Impact: Unauthorized access and potential system compromise of print management servers.
Attacker: Unidentified threat actors
Analysis: Threat actors are targeting PaperCut NG and MF servers, utilizing a zero-day flaw to conduct post-exploitation activities. Observed indicators include suspicious activity from pc-app.exe and the deletion or truncation of server logs to evade detection. The vulnerability affects all versions, though emergency patches for v25 and v26 are now available.
Recommendations: Apply emergency patches for PaperCut v25 and v26 immediately; Restrict PaperCut web interfaces to trusted IP addresses using firewall rules; Monitor server.log files for specific JDBC database errors and suspicious process behavior
Source: The Hacker News

Editorial note: this post summarizes third-party reporting and links to the original source.
View Original Source

Leave a Reply

Your email address will not be published. Required fields are marked *