PaperCut MF < 24.1.9 / 25.x < 25.0.10 Race Condition (CVE-2026-6180)

medium Nessus Plugin ID 313099

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Synopsis

PaperCut MF installed on the remote Windows host is affected by a race condition vulnerability.

Description

The version of PaperCut MF installed on the remote Windows host is prior to 24.1.9 or 25.x prior to 25.0.10. It is, therefore, affected by a vulnerability:

- A race condition exists in PaperCut NG/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, leading to the registration of a truncated badge ID string. In environments utilizing custom badge-ID post-processing scripts, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment. (CVE-2026-6180)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to PaperCut MF version 24.1.9, 25.0.10, or later.

Plugin Details

Severity: Medium

ID: 313099

File Name: papercut_mf_25_0_10_cve-2026-6180.nasl

Version: 1.4

Type: Local

Agent: windows

Family: Windows

Published: 5/7/2026

Updated: 5/13/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-6180

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 4.1

Threat Score: 0.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/a:papercut:papercut_mf

Required KB Items: SMB/Registry/Enumerated, installed_sw/PaperCut MF

Exploit Ease: No known exploits are available

Patch Publication Date: 5/5/2026

Vulnerability Publication Date: 5/5/2026

Reference Information

CVE: CVE-2026-6180

IAVA: 2026-A-0425

Detections

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