Is CVE-2021-33945 being actively exploited?

CVE-2021-33945 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2021-33945?

CVE-2021-33945 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2021-33945

CRITICAL · CVSS 9.8EPSS 1.8%EU EUVD

RICOH Printer series SP products 320DN, SP 325DNw, SP 320SN, SP 320SFN, SP 325SNw, SP 325SFNw, SP 330SN, Aficio SP 3500SF, SP 221S, SP 220SNw, SP 221SNw, SP 221SF, SP 220SFNw, SP 221SFNw v1.06 were discovered to contain a stack buffer overflow in the file /etc/wpa_supplicant.conf. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
EPSS score: 1.8% (79th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2021-20616)
Published: February 15, 2022
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2021-20616 in the EU Vulnerability Database. Last updated in EUVD on August 4, 2024.

View on the EU Vulnerability Database

Affected products

ricoh / aficio sp 3500sf
ricoh / aficio sp 3500sf firmware
ricoh / m 2700
ricoh / m 2700 firmware
ricoh / m 2701
ricoh / m 2701 firmware
ricoh / m 320
ricoh / m 320 firmware
ricoh / m 320f
ricoh / m 320f firmware
ricoh / m 320fb
ricoh / m 320fb firmware
ricoh / m c2000
ricoh / m c2000 firmware
ricoh / m c250fw
ricoh / m c250fw firmware
ricoh / m c250fwb
ricoh / m c250fwb firmware
ricoh / p 310
ricoh / p 310 firmware
ricoh / p 311
ricoh / p 311 firmware
ricoh / p c300w
ricoh / p c300w firmware
ricoh / p c301w
ricoh / p c301w firmware
ricoh / sp 212nw
ricoh / sp 212nw firmware
ricoh / sp 212sfnw
ricoh / sp 212sfnw firmware
ricoh / sp 212sfw
ricoh / sp 212sfw firmware
ricoh / sp 212snw
ricoh / sp 212snw firmware
ricoh / sp 212suw
ricoh / sp 212suw firmware
ricoh / sp 212w
ricoh / sp 212w firmware
ricoh / sp 213nw
ricoh / sp 213nw firmware
ricoh / sp 213sfnw
ricoh / sp 213sfnw firmware
ricoh / sp 213sfw
ricoh / sp 213sfw firmware
ricoh / sp 213snw
ricoh / sp 213snw firmware
ricoh / sp 213suw
ricoh / sp 213suw firmware
ricoh / sp 213w
ricoh / sp 213w firmware

and 90 more…

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

RICOH IM C2000 / C2000LT / C2500 / C2500LT /C3000 / C3000LT / C3500 / C3500LT / C4500 /C4500LT / C5500 / C5500LT/ C6000 / C6000LT Enhanced Security Firmware version E-1.00-H - Ricoh Company, Ltd. - Common Criteria 608-LSS - active

References

https://github.com/Ainevsia/CVE-Request/tree/main/Ricoh/1(Exploit, Third Party Advisory)
https://www.ricoh.com/info/2022/0228_1/(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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