Cyber Resilience

CVE-2023-0856

Critical

Published: 11 May 2023

Published
11 May 2023
Modified
21 November 2024
KEV Added
Patch
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 0.0255 85.8th percentile
Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-0856 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Canon Mf642Cdw Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 14.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Buffer overflow in IPP sides attribute process of Office / Small Office Multifunction Printers and Laser Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *:Satera LBP660C…

more

Series/LBP620C Series/MF740C Series/MF640C Series firmware Ver.11.04 and earlier sold in Japan. Color imageCLASS LBP660C Series/LBP 620C Series/X LBP1127C/MF740C Series/MF640C Series/X MF1127C firmware Ver.11.04 and earlier sold in US. i-SENSYS LBP660C Series/LBP620C Series/MF740C Series/MF640C Series, C1127P, C1127iF, C1127i firmware Ver.11.04 and earlier sold in Europe.

CWE(s)

Related Threats

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

Affected Assets

canon
mf642cdw firmware
≤ 11.04
canon
mf644cdw firmware
≤ 11.04
canon
mf741cdw firmware
≤ 11.04
canon
mf743cdw firmware
≤ 11.04
canon
mf745cdw firmware
≤ 11.04
canon
lbp621c firmware
≤ 11.04
canon
lbp622c firmware
≤ 11.04
canon
lbp661c firmware
≤ 11.04
canon
lbp662c firmware
≤ 11.04
canon
lbp664c firmware
≤ 11.04
+35 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.

addresses: CWE-787

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

References