Denial of Service Vulnerability in Ricoh Printers by Ricoh
CVE-2026-101040

7.1HIGH

Key Information:

Vendor: Ricoh
Status: Sp 330dn; Sp 221; Sp C252sf; Aficio Sp 3500sf
Vendor: CVE Published:; 28 September 2026

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👾 Exploit Exists🟡 Public PoC

What is CVE-2026-101040?

A security flaw in Ricoh printers including models SP 330DN, SP 221, SP C252SF, and Aficio SP 3500SF allows for a Denial of Service attack through manipulation of the HTTP Multipart Form-Data Parser. This vulnerability can be exploited remotely, posing significant risks to networked environments. Publicly available exploit methods heighten the urgency for users to implement appropriate security measures. The vendor was notified of this issue but has not responded.

Affected Version(s)

Aficio SP 3500SF 20260813

SP 221 20260813

SP 330DN 20260813

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-101040 - Proof of Concept