PaperCut MF/NG: Authentication Bypass
CVSS score
8.8
EPSS probability
%85.6
Risk score
15.1
Published
1 mo ago
Related Security News
Articles and analysis bulletins in which the press and security publications have covered this vulnerability:
Metasploit Wrap Up: This One Goes to Sixteen!
This One Goes to Sixteen!Another banger from Metasploit with sixteen new modules, including ten exploit modules, with five on the CISA KEV list. Cisco, Papercut, Sonicwall, Jetbrains, and Langflow all have exploit modules, and not to be outdone, we even have a Metasploit scanner to watch the watchers!New module content (16)Elasticsearch ingest-attachment Apache Tika XFA XXE Local File ReadAuthors: Bourbon Offensive Security Services and Jean-Marie BourbonType: AuxiliaryPull request: #21739 contributed by kmkzPath: scanner/http/elasticsearch_tika_xfa_xxeCVE reference: CVE-2025-66516Description:
Tweehonderd PaperCut NG/MF-servers missen update voor aangevallen lek
Meer dan tweehonderd PaperCut NG/MF-servers, waaronder zeven in Nederland, missen een belangrijke beveiligingsupdate voor twee ...
⚡ Weekly Recap: Chinese Spy Proxy, AI Agents Go Off-Task, Router Backdoors and More
The boring parts caused most of the trouble. A router shipped ready to listen. A fake check turned the user into the installer. Trusted systems collected traffic and passwords, then cleaned the logs. Old bugs formed new attack chains. Even an AI agent decided its assigned task was optional. Elsewhere, fake apps, helpful support calls, cheap banking kits, exposed systems, and weak defaults kept
PaperCut Issues Second Emergency Patch as Researchers Break Fix for Exploited Zero-Days
PaperCut released a second emergency patch last Friday, for two vulnerabilities in its NG and MF print management servers that attackers are already exploiting, after security researchers demonstrated that the vendor's first fix could be bypassed. The two flaws work as a chain. CVE-2026-81578, rated 8.8 on the CVSS scale, is an improper access control weakness in the PaperCut web management interface that lets unauthenticated remote requests reach administrative functions before the server finishes validating access. CVE-2026-82078, rated 9.4, is an unsafe dynamic class-loading flaw in the pro
PaperCut publiceert tweede noodpatch wegens aanvallen op NG/MF-servers
Softwarebedrijf PaperCut heeft een tweede noodpatch uitgebracht wegens aanvallen op PaperCut NG/MF-servers. PaperCut NG en MF ...
Attackers Chain Two PaperCut Flaws to Execute Code Without Authentication
Malicious actors are exploiting a newly patched security flaw in PaperCut NG and MF to execute arbitrary code on susceptible instances, as the company released a fresh emergency fix with additional hardening. "This vulnerability gives an unauthenticated attacker remote control over PaperCut's trusted configuration, which could be used to execute arbitrary Java code inside the application's
PaperCut NG/MF Critical Zero-Day Exploited in the Wild
Overview On August 27, 2026, PaperCut Software published an urgent security advisory stating that it is investigating active exploitation of a vulnerability affecting PaperCut NG and PaperCut MF. PaperCut has confirmed customer incidents and is treating the issue as a security emergency. At the initial time of disclosure, the vulnerability had not been assigned a CVE identifier, and PaperCut had not publicly disclosed a CVSS score, vulnerability class, authentication requirements, or the technical details of the exploit path. However on August 28, the vendor assigned CVE-2026-81578 and CVE-202
PaperCut Zero-Day Exploited in Attacks, Affecting All NG and MF Versions
PaperCut has alerted customers that bad actors are actively exploiting a vulnerability impacting all versions of its PaperCut NG and PaperCut MF print management software in zero-day attacks. The company has released an emergency patch for v25 and v26 to address the issue. It said it's "aware of confirmed customer incidents and is treating this matter with the highest priority." An
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