CVE-2026-63226: Improper restriction of communication channel to intended endpoints in Ricoh Company Ricoh printers and Multifunction Printers (MFPs)
Ricoh printers and Multifunction Printers (MFPs) have a vulnerability where SSH port forwarding is not properly restricted, allowing connections to arbitrary destinations on the local network when SSH is enabled. This improper restriction can be leveraged to connect to other nodes on the LAN. The vulnerability has a medium severity rating with a CVSS score of 5.8. No specific affected versions or patches are currently identified.
AI Analysis
Technical Summary
CVE-2026-63226 describes a vulnerability in Ricoh printers and Multifunction Printers (MFPs) where SSH port forwarding is not properly restricted to intended endpoints. This allows an attacker with SSH access to forward ports to arbitrary destinations within the local network, potentially enabling unauthorized network connections. The vulnerability affects Ricoh devices with SSH enabled, but no further version details or vendor patches are currently available.
Potential Impact
An attacker can use SSH port forwarding on affected Ricoh printers or MFPs to connect to arbitrary devices on the local network. This may allow unauthorized access or reconnaissance within the LAN. The vulnerability does not directly impact confidentiality beyond limited information disclosure (CVSS impact: Confidentiality Low), and does not affect integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling SSH on affected Ricoh printers and MFPs if not required, or restrict network access to these devices to trusted administrators only.
CVE-2026-63226: Improper restriction of communication channel to intended endpoints in Ricoh Company Ricoh printers and Multifunction Printers (MFPs)
Description
Ricoh printers and Multifunction Printers (MFPs) have a vulnerability where SSH port forwarding is not properly restricted, allowing connections to arbitrary destinations on the local network when SSH is enabled. This improper restriction can be leveraged to connect to other nodes on the LAN. The vulnerability has a medium severity rating with a CVSS score of 5.8. No specific affected versions or patches are currently identified.
CVSS v3.0
Score 5.8medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-63226 describes a vulnerability in Ricoh printers and Multifunction Printers (MFPs) where SSH port forwarding is not properly restricted to intended endpoints. This allows an attacker with SSH access to forward ports to arbitrary destinations within the local network, potentially enabling unauthorized network connections. The vulnerability affects Ricoh devices with SSH enabled, but no further version details or vendor patches are currently available.
Potential Impact
An attacker can use SSH port forwarding on affected Ricoh printers or MFPs to connect to arbitrary devices on the local network. This may allow unauthorized access or reconnaissance within the LAN. The vulnerability does not directly impact confidentiality beyond limited information disclosure (CVSS impact: Confidentiality Low), and does not affect integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling SSH on affected Ricoh printers and MFPs if not required, or restrict network access to these devices to trusted administrators only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jpcert
- Date Reserved
- 2026-07-16T01:18:29.934Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a61ac259c2644c7f875c941
Added to database: 07/23/2026, 05:52:37 UTC
Last enriched: 07/23/2026, 06:07:07 UTC
Last updated: 07/23/2026, 06:24:53 UTC
Views: 4
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