CVE-2026-21409 MEDIUM

CVE-2026-21409

Vendor Ricoh Company, Ltd.
Product RICOH Streamline NX
Weakness CWE-639 · IDOR
Published January 9, 2026
Last update January 9, 2026

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Improper authorization vulnerability exists in 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.

Key dates

02Disclosure timeline

January 9, 2026 CVE published
January 9, 2026 Record updated