What’s Vulnerable › Vulnerabilities

CVE-2023-0853

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-11 · updated 2026-06-17
• Weakness: CWE-121

Description

Buffer overflow in mDNS NSEC record registering 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 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.

Affected products

• Canon I-Sensys Lbp621Cw Firmware: through 11.04
• Canon I-Sensys Lbp623Cdw Firmware: through 11.04
• Canon I-Sensys Lbp633Cdw Firmware: through 11.04
• Canon I-Sensys Lbp664Cx Firmware: through 11.04
• Canon I-Sensys Mf641Cw Firmware: through 11.04
• Canon I-Sensys Mf643Cdw Firmware: through 11.04
• Canon I-Sensys Mf645Cx Firmware: through 11.04
• Canon I-Sensys Mf742Cdw Firmware: through 11.04
• Canon I-Sensys Mf744Cdw Firmware: through 11.04
• Canon I-Sensys Mf746Cx Firmware: through 11.04
• Canon I-Sensys X C1127I Firmware: through 11.04
• Canon I-Sensys X C1127If Firmware: through 11.04
• Canon I-Sensys X C1127P Firmware: through 11.04
• Canon Imageprograf Tc-20 Firmware: through 11.04
• Canon Imageprograf Tc-20M Firmware: through 11.04
• Canon Lbp1127C Firmware: through 11.04
• Canon Lbp122Dw Firmware: through 11.04
• Canon Lbp621C Firmware: through 11.04
• Canon Lbp622C Firmware: through 11.04
• Canon Lbp622Cdw Firmware: through 11.04
• Canon Lbp623Cdw Firmware: through 11.04
• Canon Lbp661C Firmware: through 11.04
• Canon Lbp662C Firmware: through 11.04
• Canon Lbp664C Firmware: through 11.04
• Canon Lbp664Cdw Firmware: through 11.04
• Canon Maxify Gx3020 Firmware: through 11.04
• Canon Maxify Gx4020 Firmware: through 11.04
• Canon Mf1127C Firmware: through 11.04
• Canon Mf262Dw Ii Firmware: through 11.04
• Canon Mf264Dw Ii Firmware: through 11.04

References

• https://canon.jp/support/support-info/230414vulnerability-response
• https://psirt.canon/advisory-information/cp2023-001/
• https://www.canon-europe.com/support/product-security-latest-news/
• https://www.usa.canon.com/support/canon-product-advisories/Service-Notice-Vulnerabilities-Remediation-Against-Buffer-Overflow
• https://canon.jp/support/support-info/230414vulnerability-response
• https://psirt.canon/advisory-information/cp2023-001/
• https://www.canon-europe.com/support/product-security-latest-news/
• https://www.usa.canon.com/support/canon-product-advisories/Service-Notice-Vulnerabilities-Remediation-Against-Buffer-Overflow

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