How severe is CVE-2025-14236?

CVE-2025-14236 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-2025-14236 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14236?

CVE-2025-14236 primarily affects Canon Mf455dw Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-14236?

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-2025-14236 have an EU (EUVD) identifier?

Yes. CVE-2025-14236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3033.

When was CVE-2025-14236 published?

CVE-2025-14236 was published on 2026-01-16 and last updated on 2026-06-17.

CVE-2025-14236

CVE-2025-14236 is a critical-severity vulnerability in Canon Mf455dw 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)
CVSS v4: 9.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3033
Weakness: CWE-787
Affected product: Canon Mf455dw Firmware
Published: 2026-01-16
Last modified: 2026-06-17

Description

Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera LBP670C Series/Satera MF750C Series firmware v06.02 and earlier sold in Japan.Color imageCLASS LBP630C/Color imageCLASS MF650C Series/imageCLASS LBP230 Series/imageCLASS X LBP1238 II/imageCLASS MF450 Series/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II firmware v06.02 and earlier sold in US.i-SENSYS LBP630C Series/i-SENSYS MF650C Series/i-SENSYS LBP230 Series/1238P II/1238Pr II/i-SENSYS MF450 Series/i-SENSYS MF550 Series/1238i II/1238iF II/imageRUNNER 1643i II/imageRUNNER 1643iF II firmware v06.02 and earlier sold in Europe.

Frequently asked questions

What is CVE-2025-14236?: Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera LBP670C Series/Satera MF750C Series firmware v06.02 and earlier sold in Japan.Color imageCLASS LBP630C/Color imageCLASS MF650C Series/imageCLASS LBP230 Series/imageCLASS X LBP1238 II/imageCLASS MF450 Series/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II firmware v06.02 and earlier sold in US.i-SENSYS LBP630C Series/i-SENSYS MF650C Series/i-SENSYS LBP230 Series/1238P II/1238Pr II/i-SENSYS MF450 Series/i-SENSYS MF550 Series/1238i II/1238iF II/imageRUNNER 1643i II/imageRUNNER 1643iF II firmware v06.02 and earlier sold in Europe.
How severe is CVE-2025-14236?: CVE-2025-14236 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-2025-14236 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14236?: CVE-2025-14236 primarily affects Canon Mf455dw Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-14236?: 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-2025-14236 have an EU (EUVD) identifier?: Yes. CVE-2025-14236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3033.
When was CVE-2025-14236 published?: CVE-2025-14236 was published on 2026-01-16 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:o:canon:mf455dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf453dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf452dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf451dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf654cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf656cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf653cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf652cw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf1238_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf1643if_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:mf1643i_ii_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp237dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp236dw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp633cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp632cdw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:canon:lbp1238_ii_firmware:*:*:*:*:*:*:*:*

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