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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-6180 Detail

Description

A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices. Under specific network conditions involving dropped packets and out-of-order sequence counters, the server may incorrectly process fragmented data chunks. If a sequence reset notification fails to reach the server, the server may reject the initial data chunk while erroneously accepting subsequent chunks before a connection reset completes. This leads to the registration of a truncated badge ID string. While this typically results in an authentication failure, the vulnerability is compounded in environments utilizing custom badge-ID post-processing scripts. In such configurations, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment (Incorrect User Login) on the device.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  PaperCut
CVSS-B 4.1 MEDIUM
Vector:  CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://www.papercut.com/kb/Main/papercut-ng-mf-and-papercut-hive-security-bulletin-may-2026/ PaperCut

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation PaperCut  
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition PaperCut  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-6180
NVD Published Date:
05/05/2026
NVD Last Modified:
05/05/2026
Source:
PaperCut