How severe is CVE-2023-0858?

CVE-2023-0858 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-0858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0858?

CVE-2023-0858 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-2023-0858?

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

When was CVE-2023-0858 published?

CVE-2023-0858 was published on 2023-05-11 and last updated on 2026-06-17.

CVE-2023-0858

CVE-2023-0858 is a low-severity vulnerability in Canon Mf642cdw Firmware with a CVSS 3.x base score of 3.1. 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-287.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Canon Mf642cdw Firmware
Published: 2023-05-11
Last modified: 2026-06-17

Description

Improper Authentication of RemoteUI of Office / Small Office Multifunction Printers and Laser Printers(*) which 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-2023-0858?: Improper Authentication of RemoteUI of Office / Small Office Multifunction Printers and Laser Printers(*) which 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-2023-0858?: CVE-2023-0858 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-0858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0858?: CVE-2023-0858 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-2023-0858?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-0858 published?: CVE-2023-0858 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(*)…
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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 →

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CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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