CVE-2023-27351 is an improper authentication vulnerability in PaperCut NG/MF that allows remote attackers to bypass authentication on affected installations. The flaw exists in the SecurityRequestFilter class and is caused by an improper implementation of the authentication algorithm. Available reporting specifically identifies affected PaperCut NG 22.0.5 build 63914 and more broadly describes impact to PaperCut MF/NG versions 15.0 or later prior to patched releases. Authentication is not required to exploit the issue, enabling unauthenticated access to the application server.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
36 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A printer-related remote code execution vulnerability referenced as one of the templates receiving the intrusive tag; the surrounding tags indicate Honeywell PM43 printer/IoT relevance.
A PaperCut vulnerability that Microsoft says Storm-1175 has exploited among its set of rapidly weaponized flaws.
An improper authentication vulnerability in PaperCut NG/MF that was widely exploited for unauthenticated server access.
An improper authentication vulnerability in PaperCut NG/MF that allows authentication bypass via the SecurityRequestFilter class.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.