Cyber Resilience

CVE-2021-33945

CriticalPublic PoC

Published: 15 February 2022

Published
15 February 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0054 68.1th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-33945 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Ricoh Sp 325Dnw Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 31.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

buffer overflow in the file /etc/wpa_supplicant.conf. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data.

CWE(s)
CWE-787

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

ricoh
sp 320dn firmware
1.06
ricoh
sp 325dnw firmware
1.06, all versions
ricoh
sp 320sn firmware
1.06
ricoh
sp 320sfn firmware
1.06
ricoh
sp 325snw firmware
1.06, all versions
ricoh
sp 325sfnw firmware
1.06, all versions
ricoh
sp 330sn firmware
1.06, all versions
ricoh
aficio sp 3500sf firmware
1.06
ricoh
sp 221s firmware
1.06
ricoh
sp 220snw firmware
1.06, all versions
+56 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References