CVE-2026-21409

8.2 highEPSS 0.3%

High (8.2). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.2 high

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

CVSS 3.0

5.9 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-01-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

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

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