How severe is CVE-2025-2146?

CVE-2025-2146 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-2146 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-2146?

CVE-2025-2146 primarily affects Canon Satera Mf656cdw Firmware. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-2146?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-2146 have an EU (EUVD) identifier?

Yes. CVE-2025-2146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27695.

When was CVE-2025-2146 published?

CVE-2025-2146 was published on 2025-05-26 and last updated on 2026-06-17.

CVE-2025-2146

CVE-2025-2146 is a critical-severity vulnerability in Canon Satera Mf656cdw Firmware with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27695
Weakness: CWE-787
Affected product: Canon Satera Mf656cdw Firmware
Published: 2025-05-26
Last modified: 2026-06-17

Description

Buffer overflow in WebService Authentication processing of 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 MF656Cdw/Satera MF654Cdw/Satera MF551dw/Satera MF457dw firmware v05.07 and earlier sold in Japan. Color imageCLASS MF656Cdw/Color imageCLASS MF654Cdw/Color imageCLASS MF653Cdw/Color imageCLASS MF652Cdw/Color imageCLASS LBP633Cdw/Color imageCLASS LBP632Cdw/imageCLASS MF455dw/imageCLASS MF453dw/imageCLASS MF452dw/imageCLASS MF451dw/imageCLASS LBP237dw/imageCLASS LBP236dw/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II/imageCLASS X LBP1238 II firmware v05.07 and earlier sold in US. i-SENSYS MF657Cdw/i-SENSYS MF655Cdw/i-SENSYS MF651Cdw/i-SENSYS LBP633Cdw/i-SENSYS LBP631Cdw/i-SENSYS MF553dw/i-SENSYS MF552dw/i-SENSYS MF455dw/i-SENSYS MF453dw/i-SENSYS LBP236dw/i-SENSYS LBP233dw/imageRUNNER 1643iF II/imageRUNNER 1643i II/i-SENSYS X 1238iF II/i-SENSYS X 1238i II/i-SENSYS X 1238P II/i-SENSYS X 1238Pr II firmware v05.07 and earlier sold in Europe.

Frequently asked questions

What is CVE-2025-2146?: Buffer overflow in WebService Authentication processing of 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 MF656Cdw/Satera MF654Cdw/Satera MF551dw/Satera MF457dw firmware v05.07 and earlier sold in Japan. Color imageCLASS MF656Cdw/Color imageCLASS MF654Cdw/Color imageCLASS MF653Cdw/Color imageCLASS MF652Cdw/Color imageCLASS LBP633Cdw/Color imageCLASS LBP632Cdw/imageCLASS MF455dw/imageCLASS MF453dw/imageCLASS MF452dw/imageCLASS MF451dw/imageCLASS LBP237dw/imageCLASS LBP236dw/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II/imageCLASS X LBP1238 II firmware v05.07 and earlier sold in US. i-SENSYS MF657Cdw/i-SENSYS MF655Cdw/i-SENSYS MF651Cdw/i-SENSYS LBP633Cdw/i-SENSYS LBP631Cdw/i-SENSYS MF553dw/i-SENSYS MF552dw/i-SENSYS MF455dw/i-SENSYS MF453dw/i-SENSYS LBP236dw/i-SENSYS LBP233dw/imageRUNNER 1643iF II/imageRUNNER 1643i II/i-SENSYS X 1238iF II/i-SENSYS X 1238i II/i-SENSYS X 1238P II/i-SENSYS X 1238Pr II firmware v05.07 and earlier sold in Europe.
How severe is CVE-2025-2146?: CVE-2025-2146 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-2146 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-2146?: CVE-2025-2146 primarily affects Canon Satera Mf656cdw Firmware. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-2146?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-2146 have an EU (EUVD) identifier?: Yes. CVE-2025-2146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27695.
When was CVE-2025-2146 published?: CVE-2025-2146 was published on 2025-05-26 and last updated on 2026-06-17.

References

Affected products (37)

cpe:2.3:o:canon:satera_mf656cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:satera_mf654cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:satera_mf551dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:satera_mf457dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf656cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf654cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf653cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf652cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_lbp633cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_lbp632cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf455dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf453dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf452dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_mf451dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_lbp237dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_lbp236dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_x_mf1238_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_x_mf1643i_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_x_mf1643if_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imageclass_x_lbp1238_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf657cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf655cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf651cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp633cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp631cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf553dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf552dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf455dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_mf453dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp236dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_lbp233dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imagerunner_1643if_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:imagerunner_1643i_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_x_1238if_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_x_1238i_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_x_1238p_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:i-sensys_x_1238pr_ii_firmware:*:*:*:*:*:*:*:*

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