Session hijacking in PaperCut NG/MF embedded application for Konica Minolta devices

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Summary

CVECVE-2026-5115
StatePUBLISHED
AssignerPaperCut
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-31 01:16:36 UTC
Updated2026-04-01 14:24:02 UTC
DescriptionThe PaperCut NG/MF (specifically, the embedded application for Konica Minolta devices) is vulnerable to session hijacking. The PaperCut NG/MF Embedded application is a software interface that runs directly on the touch screen of a multi-function device. It was internally discovered that the communication channel between the embedded application and the server was insecure, which could leak data including sensitive information that may be used to mount an  attack on the device. Such an attack could potentially be used to steal data or to perform a phishing attack on the end user.

Risk And Classification

Primary CVSS: v4.0 3.6 LOW from eb41dac7-0af8-4f84-9f6d-0272772514f4

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.000120000 probability, percentile 0.017840000 (date 2026-04-02)

Problem Types: CWE-319 | CWE-319 CWE-319 Cleartext transmission of sensitive information

VersionSourceTypeScoreSeverityVector
4.0eb41dac7-0af8-4f84-9f6d-0272772514f4Secondary3.6LOWCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/C...
4.0CNACVSS3.6LOWCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U

CVSS v4.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
High
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PaperCut Papercut NG/MF affected 25.0.5 semver Not specified
CNA PaperCut Papercut NG/MF affected 25.0.9 (KM certified) custom Not specified

References

ReferenceSourceLinkTags
www.papercut.com/kb/Main/papercut-ng-mf-security-bulletin-march-2026 eb41dac7-0af8-4f84-9f6d-0272772514f4 www.papercut.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Xavier Gibbon (en)

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