CVE-2026-21409

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.

Score

CVSS 4.0 8.2 High

Status

Deferred - vultures@jpcert.or.jp

Published

2026-01-09

Last modified

2026-01-09

Weaknesses

CWE-639

Affected products

• Ricoh Streamline Nx (Ricoh Company Ltd.)

References

• https://jvn.jp/en/jp/JVN12770174/
• https://www.ricoh.com/products/security/vulnerabilities/vul?id=ricoh-2025-000011