What’s Vulnerable › Vulnerabilities

CVE-2026-21409

• Severity: high (CVSS 8.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-09 · updated 2026-06-17
• Weakness: CWE-639

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.

Affected products

• Ricoh Company, Ltd. RICOH Streamline NX: from 3.5.1 through 24R3

References

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

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