CVE-2026-21409

HIGH EPSS 24.4%

Published Jan 9, 20265mo ago · Modified Jun 17, 20262w ago

8.2 CVSS 4.0

High

Published Jan 9, 2026 5mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

8.2

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

24.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-639

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.