How severe is CVE-2023-0857?

CVE-2023-0857 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-0857 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0857?

CVE-2023-0857 primarily affects Canon Mf642cdw Firmware. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-0857?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-0857 published?

CVE-2023-0857 was published on 2023-05-11 and last updated on 2026-06-17.

CVE-2023-0857

CVE-2023-0857 is a medium-severity vulnerability in Canon Mf642cdw Firmware with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-286.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-286
Affected product: Canon Mf642cdw Firmware
Published: 2023-05-11
Last modified: 2026-06-17

Description

Unintentional change of settings during initial registration of system administrators which uses control protocols. The affected Office / Small Office Multifunction Printers and Laser Printers(*) may allow an attacker on the network segment to trigger unauthorized access to the product. *: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.

Frequently asked questions

What is CVE-2023-0857?: Unintentional change of settings during initial registration of system administrators which uses control protocols. The affected Office / Small Office Multifunction Printers and Laser Printers(*) may allow an attacker on the network segment to trigger unauthorized access to the product. *: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.
How severe is CVE-2023-0857?: CVE-2023-0857 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-0857 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0857?: CVE-2023-0857 primarily affects Canon Mf642cdw Firmware. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-0857?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-0857 published?: CVE-2023-0857 was published on 2023-05-11 and last updated on 2026-06-17.

References

Affected products (45)

cpe:2.3:o:canon:mf642cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf644cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf741cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf743cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf745cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp621c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp622c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp661c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp662c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp664c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf1127c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf262dw_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf264dw_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf267dw_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf269dw_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf269dw_vp_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf272dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf273dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf275dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf641cw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf746cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp122dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp1127c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp622cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp623cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp664cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageprograf_tc-20_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageprograf_tc-20m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:pixma_g3270_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:pixma_g4270_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:maxify_gx3020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:maxify_gx4020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp621cw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp623cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp633cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp664cx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf641cw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf643cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf645cx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf742cdw_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Canon Mf642cdw Firmware

CVE-2023-0856 — Critical (CVSS 9.8): Buffer overflow in IPP sides attribute process of Office / Small Office Multifunction Printers and Laser Printers(*)…
CVE-2023-0855 — Critical (CVSS 9.8): Buffer overflow in IPP number-up attribute process of Office / Small Office Multifunction Printers and Laser…
CVE-2023-0854 — Critical (CVSS 9.8): Buffer overflow in NetBIOS QNAME registering and communication process of Office / Small Office Multifunction Printers…
CVE-2023-0853 — Critical (CVSS 9.8): Buffer overflow in mDNS NSEC record registering process of Office / Small Office Multifunction Printers and Laser…
CVE-2023-0852 — Critical (CVSS 9.8): Buffer overflow in the Address Book of Mobile Device function of Office / Small Office Multifunction Printers and Laser…
CVE-2023-0851 — Critical (CVSS 9.8): Buffer overflow in CPCA Resource Download process of Office / Small Office Multifunction Printers and Laser Printers(*)…

All CVEs affecting Canon Mf642cdw Firmware →

Other CWE-286 vulnerabilities

CVE-2025-64725 — Critical (CVSS 9.8): Weblate is a web based localization tool. In versions prior to 5.15, it was possible to accept an invitation opened by…
CVE-2023-26689 — Critical (CVSS 9.8): An issue discovered in CS-Cart MultiVendor 4.16.1 allows attackers to alter arbitrary user account profiles via crafted…
CVE-2025-7972 — Critical (CVSS 9.1): A security issue exists within the FactoryTalk Linx Network Browser. By modifying the process.env.NODE_ENV to…
CVE-2024-48853 — Critical (CVSS 9.0): An escalation of privilege vulnerability in ASPECT could provide an attacker root access to a server when logged in as…
CVE-2026-35638 — High (CVSS 8.8): OpenClaw before 2026.3.22 contains a privilege escalation vulnerability in the Control UI that allows unauthenticated…
CVE-2023-3932 — High (CVSS 8.2): An issue has been discovered in GitLab EE affecting all versions starting from 13.12 before 16.0.8, all versions…

Browse all CWE-286 vulnerabilities →