JVNDB-2026-000003

RICOH Streamline NX vulnerable to improper authorization

RICOH Streamline NX provided by Ricoh Company, Ltd. contains the following vulnerability.

• Improper authorization (CWE-639) - CVE-2026-21409

Ricoh Company, Ltd. reported this vulnerability to IPA to notify the users of its solution through JVN. JPCERT/CC and Ricoh Company, Ltd. coordinated under the Information Security Early Warning Partnership.

Ricoh Co., Ltd

• Ricoh Streamline NX 3.5.1 to 24R3

If a man-in-the-middle attack is conducted on the communication between the affected product and its user, and some crafted request is processed by the product, the user's registration information and/or OIDC (OpenID Connect) tokens may be retrieved.

[Update the Software]
Update the software to the latest version according to the information provided by the developer.

[Apply the Workaround]
The developer recommends to apply the workaround until the affected product is updated.

For more details, refer to the information provided by the developer.

Ricoh Co., Ltd

• Ricoh Company, Ltd. : Notice on potential impact of "Vulnerability leading to leakage of Credential IDs and Personally Identifiable Information of Users" towards RICOH Streamline NX V3

1. No Mapping(CWE-Other) [IPA Evaluation]

1. CVE-2026-21409

1. JVN : JVN#12770174

• [2026/01/09]
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