Hackers Are Probing PaperCut Servers, and 47% Still Have No Patch
PaperCut servers are under active attack, while 47% of tracked installations still run unpatched versions vulnerable to remote code execution. PaperCut, the print management software running in schools, hospitals, and offices worldwide, confirmed on August 27 that a pre-authentication remote code execution flaw is being actively exploited against real customers. Researchers at Huntress found evidence […]
PaperCut, the print management software running in schools, hospitals, and offices worldwide, confirmed on August 27 that a pre-authentication remote code execution flaw is being actively exploited against real customers. Researchers at Huntress found evidence of exploitation in two customer environments, and the security firm went further, reproducing the entire attack chain from scratch against a clean, unpatched install.
“Observed activity focused on system discovery. We have not observed secondary malware, further command-and-control traffic, or additional persistence or post-exploitation from the recovered payload.” reads the report published by Hutress.
Related breach coverage
- U.S. CISA adds PaperCut NG/MF flaws to its Known Exploited Vulnerabilities catalog2026-09-01
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds PaperCut NG/MF flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: PaperCut, the print management software running in schools, hospitals, and offices worldwide, recently confirmed that a pre-authentication remote code execution flaw, tracked as CVE-2026-81578, […]
- PaperCut warns of hackers using printer management software flaw in attacks2026-08-28
PaperCut released an emergency advisory on Thursday evening saying vulnerabilities in their print management software, PaperCut NG and MF, are under active exploitation.
- Poland’s CERT Warns of Active Exploitation of Critical Zimbra Collaboration Suite Flaw2026-08-21
CERT Polska confirmed active exploitation of CVE-2026-73570, a critical unauthenticated RCE in Zimbra Collaboration Suite patched on July 20. CERT Polska, Poland’s national computer emergency response team, confirmed this week that threat actors are actively exploiting a critical vulnerability in Zimbra Collaboration Suite tracked as CVE-2026-73570. The flaw allows unauthenticated remote code execution and was […]
- PostgreSQL Hit by 12-Year-Old Vulnerability Allowing Server Takeover2026-09-04
PostGREShell (CVE-2026-6471) is a 12-year-old PostgreSQL flaw that lets low-privileged attackers execute code and take over servers. Cyera researchers found a severe PostgreSQL vulnerability, dubbed PostGREShell and tracked as CVE-2026-6471 (CVSS score of 7.2). Present in releases dating back to 2014, the flaw can be exploited by attackers with low-level replication access to execute code, […]