Detections
Analytics
PaperCut NG < 24.1.9.76516 / 25.x < 25.0.12.76510 / 26.x < 26.0.4.76508 Multiple Vulnerabilities
critical Nessus Plugin ID 341347
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Synopsis
PaperCut NG installed on the remote Windows host is affected by multiple vulnerabilities.Description
The version of PaperCut NG installed on the remote Windows host is prior to 24.1.9.76516 or 25.x prior to 25.0.12.76510, or 26.x prior to 26.0.4.76508. It is, therefore, affected by the following vulnerabilities:- An authentication bypass vulnerability exists in the web management interface due to improper access controls. An unauthenticated, remote attacker can exploit this, to bypass authentication and modify certain system configurations. (CVE-2026-81578)
- A arbitrary code execution vulnerability exists in the database connection utilities due to improper validation against an allowlist of approved drivers. An authenticated, remote attacker can exploit this to execute arbitrary Java bytecode residing on the application classpath under the security context of the server process. (CVE-2026-82078)
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 NG version 24.1.9.76516, 25.0.12.76510, 26.0.4.76508, or later.See Also
Plugin Details
Severity: Critical
ID: 341347
File Name: papercut_ng_26_0_4_76508.nasl
Version: 1.5
Type: Local
Agent: windows
Family: Windows
Published: 8/28/2026
Updated: 9/7/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.6
Percentile: 99.95
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 8.3
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-81578
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.4
Threat Score: 9.4
Threat Vector: CVSS:4.0/E:A
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score Source: CVE-2026-82078
Vulnerability Information
CPE: cpe:/a:papercut:papercut_ng
Required KB Items: SMB/Registry/Enumerated, installed_sw/PaperCut NG
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/27/2026
Vulnerability Publication Date: 8/27/2026
CISA Known Exploited Vulnerability Due Dates: 9/14/2026
Exploitable With
Metasploit (PaperCut NG/MF Unauthenticated RCE (CVE-2026-81578 + CVE-2026-82078))
Reference Information
CVE: CVE-2026-81578, CVE-2026-82078
IAVA: 2026-A-0916