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.

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History

Tue, 12 May 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Papercut papercut Ng
CPEs cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*
Vendors & Products Papercut papercut Ng
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Tue, 05 May 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Papercut
Papercut papercut Mf
Vendors & Products Papercut
Papercut papercut Mf

Tue, 05 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 05 May 2026 07:00:00 +0000

Type Values Removed Values Added
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.
Title PaperCut MF: Card truncation on HP readers
Weaknesses CWE-20
CWE-367
References
Metrics cvssV4_0

{'score': 4.1, '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: PaperCut

Published:

Updated: 2026-05-05T14:13:10.635Z

Reserved: 2026-04-13T05:21:02.099Z

Link: CVE-2026-6180

cve-icon Vulnrichment

Updated: 2026-05-05T13:47:31.711Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-05T07:16:00.793

Modified: 2026-05-12T19:04:43.290

Link: CVE-2026-6180

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-05T21:30:05Z

Weaknesses